New resource: aws_pinpoint_apns_channel

[marcoreni]

Work continues on #4990

Changes proposed in this pull request:

• New resource aws_pinpoint_apns_channel with related docs and acceptance tests

Output from acceptance testing:

$ make testacc TEST=./aws TESTARGS='-run=TestAccAWSPinpointAPNSChannel'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./aws -v -parallel 20 -run=TestAccAWSPinpointAPNSChannel -timeout 120m
=== RUN   TestAccAWSPinpointAPNSChannel_basicCertificate
--- PASS: TestAccAWSPinpointAPNSChannel_basicCertificate (28.69s)
=== RUN   TestAccAWSPinpointAPNSChannel_basicToken
--- PASS: TestAccAWSPinpointAPNSChannel_basicToken (57.13s)
PASS
ok      github.com/terraform-providers/terraform-provider-aws/aws       85.876s

NOTES:

• As an Apple n00b I had some troubles finding the appropriate values required for the various attributes. I tried to explain as simple as possible (using references from AWS guides) what is needed, hope this is enough.
• The tests require two set of credentials, one for TLS certificate credentials and the other for key credentials. The two tests are independent from each other, and inside the test file I referenced Apple docs about retrieving the credentials.
• I tried to use the same key method used for sns_platform_application tests; I had some issues using the file path instead of the file contents as it's done here: https://github.com/terraform-providers/terraform-provider-aws/blob/master/aws/resource_aws_sns_platform_application_test.go#L56 ) because of: testing.go:538: Step 0 error: Error loading configuration: Error loading /tmp/tf-test026656738/main.tf: Error reading config for aws_pinpoint_apns_channel[test_apns_channel]: parse error at 1:19: expected expression but found invalid sequence "\\". I assume is caused by an HCL issue and I therefore decided to use only the first method (loading the file content inside the ENV).

The remaining resources (apns_sandbox_channel and apns_voip_*) are almost identical to this. Let me know if this is fine so that I can go on with the rest :)

[bflad]

This LGTM, based on the other Pinpoint resource implementations. Thanks, @marcoreni! 🚀

[bflad]

This has been released in version 1.41.0 of the AWS provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!