Migrate to terraform-plugin-sdk (#346)

* Upgrade to hashicorp/terraform v0.12.7 to prepare for plugin-sdk migration

* Migrate to standalone terraform-plugin-sdk

```
▶ GO111MODULE=on tf-sdk-migrator check
Checking Go runtime version ...
Go version 1.12.10: OK.
Checking whether provider uses Go modules...
Go modules in use: OK.
Checking version of github.com/hashicorp/terraform-plugin-sdk to determine if provider was already migrated...
Checking version of github.com/hashicorp/terraform used in provider...
Terraform version 0.12.7: OK.
Checking whether provider uses deprecated SDK packages or identifiers...
No imports of deprecated SDK packages or identifiers: OK.

All constraints satisfied. Provider can be migrated to the new SDK.
```

```
▶ GO111MODULE=on tf-sdk-migrator migrate
Checking Go runtime version ...
Go version 1.12.10: OK.
Checking whether provider uses Go modules...
Go modules in use: OK.
Checking version of github.com/hashicorp/terraform-plugin-sdk to determine if provider was already migrated...
Checking version of github.com/hashicorp/terraform used in provider...
Terraform version 0.12.7: OK.
Checking whether provider uses deprecated SDK packages or identifiers...
No imports of deprecated SDK packages or identifiers: OK.

All constraints satisfied. Provider can be migrated to the new SDK.

Rewriting provider go.mod file...
Rewriting SDK package imports...
Running `go mod tidy`...
Success! Provider is migrated to github.com/hashicorp/terraform-plugin-sdk v1.1.0.

It looks like this provider vendors dependencies. Don't forget to run `go mod vendor`.
Make sure to review all changes and run all tests.
```

datadog/data_source_datadog_ip_ranges.go

@@ -1,7 +1,7 @@
 package datadog
 
 import (
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	datadog "github.com/zorkian/go-datadog-api"
 )
 

datadog/data_source_datadog_ip_ranges_test.go

@@ -3,7 +3,7 @@ package datadog
 import (
 	"testing"
 
-	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
 )
 
 func TestAccDatadogIpRangesDatasource_existing(t *testing.T) {

datadog/import_datadog_downtime_test.go

@@ -3,7 +3,7 @@ package datadog
 import (
 	"testing"
 
-	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
 )
 
 func TestDatadogDowntime_import(t *testing.T) {

datadog/import_datadog_integration_pagerduty_test.go

@@ -3,7 +3,7 @@ package datadog
 import (
 	"testing"
 
-	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
 )
 
 func TestDatadogIntegrationPagerduty_import(t *testing.T) {

datadog/import_datadog_logs_pipeline_test.go

@@ -1,7 +1,7 @@
 package datadog
 
 import (
-	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
 	"testing"
 )
 

datadog/import_datadog_monitor_test.go

@@ -3,7 +3,7 @@ package datadog
 import (
 	"testing"
 
-	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
 )
 
 func TestDatadogMonitor_import(t *testing.T) {

datadog/import_datadog_user_test.go

@@ -3,7 +3,7 @@ package datadog
 import (
 	"testing"
 
-	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
 )
 
 func TestDatadogUser_import(t *testing.T) {

datadog/provider.go

@@ -7,9 +7,9 @@ import (
 	"runtime"
 
 	cleanhttp "github.com/hashicorp/go-cleanhttp"
-	"github.com/hashicorp/terraform/helper/logging"
-	"github.com/hashicorp/terraform/helper/schema"
-	"github.com/hashicorp/terraform/terraform"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/logging"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/terraform"
 	"github.com/terraform-providers/terraform-provider-datadog/version"
 	"github.com/zorkian/go-datadog-api"
 )

datadog/provider_test.go

@@ -4,8 +4,8 @@ import (
 	"os"
 	"testing"
 
-	"github.com/hashicorp/terraform/helper/schema"
-	"github.com/hashicorp/terraform/terraform"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/terraform"
 )
 
 var testAccProviders map[string]terraform.ResourceProvider

datadog/resource_datadog_dashboard.go

@@ -6,7 +6,7 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	datadog "github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_dashboard_list.go

@@ -5,7 +5,7 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	datadog "github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_dashboard_list_test.go

@@ -6,8 +6,8 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/hashicorp/terraform/helper/resource"
-	"github.com/hashicorp/terraform/terraform"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/terraform"
 	datadog "github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_dashboard_test.go

@@ -5,8 +5,8 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/hashicorp/terraform/helper/resource"
-	"github.com/hashicorp/terraform/terraform"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/terraform"
 	datadog "github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_downtime.go

@@ -8,8 +8,8 @@ import (
 	"strings"
 	"time"
 
-	"github.com/hashicorp/terraform/helper/schema"
-	"github.com/hashicorp/terraform/helper/validation"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/validation"
 	datadog "github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_downtime_test.go

@@ -8,8 +8,8 @@ import (
 	"testing"
 	"time"
 
-	"github.com/hashicorp/terraform/helper/resource"
-	"github.com/hashicorp/terraform/terraform"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/terraform"
 	"github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_integration_aws.go

@@ -6,7 +6,7 @@ import (
 	"strings"
 	"sync"
 
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	"github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_integration_gcp.go

@@ -3,7 +3,7 @@ package datadog
 import (
 	"fmt"
 
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	"github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_integration_gcp_test.go

@@ -4,8 +4,8 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/hashicorp/terraform/helper/resource"
-	"github.com/hashicorp/terraform/terraform"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/terraform"
 	datadog "github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_integration_pagerduty.go

@@ -5,7 +5,7 @@ import (
 	"strings"
 	"sync"
 
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	"github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_integration_pagerduty_service_object.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"strings"
 
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	"github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_integration_pagerduty_service_object_test.go

@@ -4,7 +4,7 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
 )
 
 // We're not testing for schedules because Datadog actively verifies it with Pagerduty

datadog/resource_datadog_integration_pagerduty_test.go

@@ -5,8 +5,8 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/hashicorp/terraform/helper/resource"
-	"github.com/hashicorp/terraform/terraform"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/terraform"
 	datadog "github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_logs_custom_pipeline.go

@@ -2,7 +2,7 @@ package datadog
 
 import (
 	"fmt"
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	"github.com/zorkian/go-datadog-api"
 	"strings"
 )

datadog/resource_datadog_logs_custom_pipeline_test.go

@@ -2,8 +2,8 @@ package datadog
 
 import (
 	"fmt"
-	"github.com/hashicorp/terraform/helper/resource"
-	"github.com/hashicorp/terraform/terraform"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/terraform"
 	"github.com/zorkian/go-datadog-api"
 	"strings"
 	"testing"

datadog/resource_datadog_logs_index.go

@@ -2,7 +2,7 @@ package datadog
 
 import (
 	"fmt"
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	"github.com/zorkian/go-datadog-api"
 	"strings"
 )

datadog/resource_datadog_logs_index_order.go

@@ -2,7 +2,7 @@ package datadog
 
 import (
 	"fmt"
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	"github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_logs_integration_pipeline.go

@@ -2,7 +2,7 @@ package datadog
 
 import (
 	"fmt"
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	"github.com/zorkian/go-datadog-api"
 	"strings"
 )

datadog/resource_datadog_logs_pipeline_order.go

@@ -2,7 +2,7 @@ package datadog
 
 import (
 	"fmt"
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	"github.com/zorkian/go-datadog-api"
 	"strings"
 )

datadog/resource_datadog_metric_metadata.go

@@ -6,7 +6,7 @@ import (
 
 	"github.com/zorkian/go-datadog-api"
 
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 )
 
 func resourceDatadogMetricMetadata() *schema.Resource {

datadog/resource_datadog_metric_metadata_test.go

@@ -5,8 +5,8 @@ import (
 	"testing"
 	"time"
 
-	"github.com/hashicorp/terraform/helper/resource"
-	"github.com/hashicorp/terraform/terraform"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/terraform"
 	"github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_monitor.go

@@ -9,7 +9,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	"github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_monitor_test.go

@@ -6,8 +6,8 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/hashicorp/terraform/helper/resource"
-	"github.com/hashicorp/terraform/terraform"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/terraform"
 	"github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_screenboard.go

@@ -8,7 +8,7 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	"github.com/kr/pretty"
 	datadog "github.com/zorkian/go-datadog-api"
 )

datadog/resource_datadog_screenboard_test.go

@@ -6,8 +6,8 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/hashicorp/terraform/helper/resource"
-	"github.com/hashicorp/terraform/terraform"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/terraform"
 	datadog "github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_service_level_objective.go

@@ -6,7 +6,7 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	"github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_service_level_objective_test.go

@@ -5,8 +5,8 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/hashicorp/terraform/helper/resource"
-	"github.com/hashicorp/terraform/terraform"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/terraform"
 	"github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_synthetics_test_.go

@@ -8,8 +8,8 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/hashicorp/terraform/helper/schema"
-	"github.com/hashicorp/terraform/helper/validation"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/validation"
 	datadog "github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_synthetics_test_test.go

@@ -5,8 +5,8 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/hashicorp/terraform/helper/resource"
-	"github.com/hashicorp/terraform/terraform"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/terraform"
 	datadog "github.com/zorkian/go-datadog-api"
 )
 

datadog/resource_datadog_timeboard.go

@@ -7,7 +7,7 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	"github.com/kr/pretty"
 	"github.com/zorkian/go-datadog-api"
 )

datadog/resource_datadog_timeboard_test.go

@@ -6,8 +6,8 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/hashicorp/terraform/helper/resource"
-	"github.com/hashicorp/terraform/terraform"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/terraform"
 	"github.com/zorkian/go-datadog-api"
 )