aws_rds_cluster: Add arn attribute

[bflad]

Changes proposed in this pull request:

• Use API provided ARN instead of manually created one
• Add arn attribute to aws_rds_cluster resource
• Add arn attribute to aws_rds_cluster data source

Output from acceptance testing:

19 tests passed (all tests)
=== RUN   TestAccAWSRDSCluster_missingUserNameCausesError
--- PASS: TestAccAWSRDSCluster_missingUserNameCausesError (3.99s)
=== RUN   TestAccAWSRDSCluster_updateTags
--- PASS: TestAccAWSRDSCluster_updateTags (105.37s)
=== RUN   TestAccAWSRDSCluster_takeFinalSnapshot
--- PASS: TestAccAWSRDSCluster_takeFinalSnapshot (108.83s)
=== RUN   TestAccAWSRDSCluster_iamAuth
--- PASS: TestAccAWSRDSCluster_iamAuth (109.02s)
=== RUN   TestAccAWSRDSCluster_encrypted
--- PASS: TestAccAWSRDSCluster_encrypted (109.18s)
=== RUN   TestAccAWSRDSCluster_basic
--- PASS: TestAccAWSRDSCluster_basic (109.53s)
=== RUN   TestAccAWSRDSCluster_importBasic
--- PASS: TestAccAWSRDSCluster_importBasic (110.01s)
=== RUN   TestAccAWSRDSCluster_EngineVersion
--- PASS: TestAccAWSRDSCluster_EngineVersion (110.46s)
=== RUN   TestAccAWSRDSCluster_namePrefix
--- PASS: TestAccAWSRDSCluster_namePrefix (112.04s)
=== RUN   TestAccAWSRDSCluster_generatedName
--- PASS: TestAccAWSRDSCluster_generatedName (112.11s)
=== RUN   TestAccAWSRDSCluster_kmsKey
--- PASS: TestAccAWSRDSCluster_kmsKey (117.09s)
=== RUN   TestAccAWSRDSCluster_BacktrackWindow
--- PASS: TestAccAWSRDSCluster_BacktrackWindow (117.20s)
=== RUN   TestAccAWSRDSCluster_updateCloudwatchLogsExports
--- PASS: TestAccAWSRDSCluster_updateCloudwatchLogsExports (124.09s)
=== RUN   TestAccAWSRDSCluster_backupsUpdate
--- PASS: TestAccAWSRDSCluster_backupsUpdate (124.15s)
=== RUN   TestAccAWSRDSCluster_updateIamRoles
--- PASS: TestAccAWSRDSCluster_updateIamRoles (124.63s)
=== RUN   TestAccDataSourceAWSRDSCluster_basic
--- PASS: TestAccDataSourceAWSRDSCluster_basic (143.74s)
=== RUN   TestAccAWSRDSCluster_Port
--- PASS: TestAccAWSRDSCluster_Port (210.26s)
=== RUN   TestAccAWSRDSCluster_EncryptedCrossRegionReplication
--- PASS: TestAccAWSRDSCluster_EncryptedCrossRegionReplication (1477.97s)
=== RUN   TestAccAWSRDSCluster_s3Restore
--- PASS: TestAccAWSRDSCluster_s3Restore (1513.79s)

[catsby]

👍

[bflad]

This has been released in version 1.30.0 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!