Now, we can specify multiple filter values per a cost filter key like

```
resource "aws_budgets_budget" "test" {
  # :
  # (snip)
  # :

  cost_filter {
    name = "Region"
    values = [
      "ap-northeast-1",
      "us-east-1",
    ]
  }

  cost_filter {
    name = "PurchaseType"
    values = [
      "Spot",
    ]
  }

  # :
  # (snip)
  # :
}
```

And we made `cost_filters` deprecated. That should be removed in future
releases.

…ease.

Acceptance test output:

% make testacc TESTARGS='-run=TestAccAWSBudgetsBudgetAction_'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./aws -v -count 1 -parallel 20 -run=TestAccAWSBudgetsBudgetAction_ -timeout 180m
=== RUN   TestAccAWSBudgetsBudgetAction_basic
=== PAUSE TestAccAWSBudgetsBudgetAction_basic
=== RUN   TestAccAWSBudgetsBudgetAction_disappears
=== PAUSE TestAccAWSBudgetsBudgetAction_disappears
=== CONT  TestAccAWSBudgetsBudgetAction_basic
=== CONT  TestAccAWSBudgetsBudgetAction_disappears
--- PASS: TestAccAWSBudgetsBudgetAction_disappears (29.50s)
--- PASS: TestAccAWSBudgetsBudgetAction_basic (29.58s)
PASS
ok  	github.com/terraform-providers/terraform-provider-aws/aws	32.689s

Acceptance test output:

% make testacc TESTARGS='-run=TestAccAWSBudgetsBudget_basic'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./aws -v -count 1 -parallel 20 -run=TestAccAWSBudgetsBudget_basic -timeout 180m
=== RUN   TestAccAWSBudgetsBudget_basic
=== PAUSE TestAccAWSBudgetsBudget_basic
=== CONT  TestAccAWSBudgetsBudget_basic
--- PASS: TestAccAWSBudgetsBudget_basic (23.28s)
PASS
ok  	github.com/terraform-providers/terraform-provider-aws/aws	26.567s

…e in ARN.

Acceptance test output:
% make testacc TESTARGS='-run=TestAccAWSBudgetsBudget_basic\|TestAccAWSBudgetsBudget_disappears\|TestAccAWSBudgetsBudgetAction_'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./aws -v -count 1 -parallel 20 -run=TestAccAWSBudgetsBudget_basic\|TestAccAWSBudgetsBudget_disappears\|TestAccAWSBudgetsBudgetAction_ -timeout 180m
=== RUN   TestAccAWSBudgetsBudgetAction_basic
=== PAUSE TestAccAWSBudgetsBudgetAction_basic
=== RUN   TestAccAWSBudgetsBudgetAction_disappears
=== PAUSE TestAccAWSBudgetsBudgetAction_disappears
=== RUN   TestAccAWSBudgetsBudget_basic
=== PAUSE TestAccAWSBudgetsBudget_basic
=== RUN   TestAccAWSBudgetsBudget_disappears
=== PAUSE TestAccAWSBudgetsBudget_disappears
=== RUN   TestAccAWSBudgetsBudget_basicish
=== PAUSE TestAccAWSBudgetsBudget_basicish
=== CONT  TestAccAWSBudgetsBudgetAction_basic
=== CONT  TestAccAWSBudgetsBudget_disappears
=== CONT  TestAccAWSBudgetsBudget_basicish
=== CONT  TestAccAWSBudgetsBudget_basic
=== CONT  TestAccAWSBudgetsBudgetAction_disappears
--- PASS: TestAccAWSBudgetsBudget_disappears (10.17s)
--- PASS: TestAccAWSBudgetsBudget_basic (13.11s)
--- PASS: TestAccAWSBudgetsBudget_basicish (24.14s)
--- PASS: TestAccAWSBudgetsBudgetAction_disappears (24.38s)
--- PASS: TestAccAWSBudgetsBudgetAction_basic (58.92s)
PASS
ok  	github.com/terraform-providers/terraform-provider-aws/aws	62.207s

Acceptance test output:

% make testacc TESTARGS='-run=TestAccAWSBudgetsBudget_basic'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./aws -v -count 1 -parallel 20 -run=TestAccAWSBudgetsBudget_basic -timeout 180m
=== RUN   TestAccAWSBudgetsBudget_basic
=== PAUSE TestAccAWSBudgetsBudget_basic
=== RUN   TestAccAWSBudgetsBudget_basicish
=== PAUSE TestAccAWSBudgetsBudget_basicish
=== CONT  TestAccAWSBudgetsBudget_basic
=== CONT  TestAccAWSBudgetsBudget_basicish
--- PASS: TestAccAWSBudgetsBudget_basic (17.08s)
--- PASS: TestAccAWSBudgetsBudget_basicish (27.29s)
PASS
ok  	github.com/terraform-providers/terraform-provider-aws/aws	30.688s

hashicorp#10692).

Acceptance test output:

% make testacc TESTARGS='-run=TestAccAWSBudgetsBudget_CostTypes'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./aws -v -count 1 -parallel 20 -run=TestAccAWSBudgetsBudget_CostTypes -timeout 180m
=== RUN   TestAccAWSBudgetsBudget_CostTypes
=== PAUSE TestAccAWSBudgetsBudget_CostTypes
=== CONT  TestAccAWSBudgetsBudget_CostTypes
--- PASS: TestAccAWSBudgetsBudget_CostTypes (20.96s)
PASS
ok  	github.com/terraform-providers/terraform-provider-aws/aws	24.217s

Acceptance test output:

% make testacc TESTARGS='-run=TestAccAWSBudgetsBudget_Notifications'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./aws -v -count 1 -parallel 20 -run=TestAccAWSBudgetsBudget_Notifications -timeout 180m
=== RUN   TestAccAWSBudgetsBudget_Notifications
=== PAUSE TestAccAWSBudgetsBudget_Notifications
=== CONT  TestAccAWSBudgetsBudget_Notifications
--- PASS: TestAccAWSBudgetsBudget_Notifications (27.42s)
PASS
ok  	github.com/terraform-providers/terraform-provider-aws/aws	30.688s