add arn to aws_wafregional_ipset

[saravanan30erd]

Fixes #4772

Changes proposed in this pull request:

• Change 1
  Added arn attribute to aws_wafregional_ipset

Output from acceptance testing:

$ make testacc TEST=./aws/ TESTARGS='-run=TestAccAWSWafRegionalIPSet_basic'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./aws/ -v -run=TestAccAWSWafRegionalIPSet_basic -timeout 120m
=== RUN   TestAccAWSWafRegionalIPSet_basic
--- PASS: TestAccAWSWafRegionalIPSet_basic (50.89s)
PASS
ok  	github.com/terraform-providers/terraform-provider-aws/aws	50.919s
...

[bflad]

LGTM according to the AWS ARN documentation -- thanks! 🚀

5 tests passed (all tests)
=== RUN   TestAccAWSWafRegionalIPSet_noDescriptors
--- PASS: TestAccAWSWafRegionalIPSet_noDescriptors (11.55s)
=== RUN   TestAccAWSWafRegionalIPSet_basic
--- PASS: TestAccAWSWafRegionalIPSet_basic (25.29s)
=== RUN   TestAccAWSWafRegionalIPSet_changeDescriptors
--- PASS: TestAccAWSWafRegionalIPSet_changeDescriptors (27.09s)
=== RUN   TestAccAWSWafRegionalIPSet_disappears
--- PASS: TestAccAWSWafRegionalIPSet_disappears (36.11s)
=== RUN   TestAccAWSWafRegionalIPSet_changeNameForceNew
--- PASS: TestAccAWSWafRegionalIPSet_changeNameForceNew (49.58s)

[bflad]

This has been released in version 1.23.0 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!