resource/aws_rds_cluster: Add retries for IAM eventual consistency

[bflad]

Found during acceptance testing:

--- FAIL: TestAccAWSRDSCluster_updateIamRoles (147.11s)
    testing.go:518: Step 1 error: Error applying: 1 error(s) occurred:
        
        * aws_rds_cluster.default: 1 error(s) occurred:
        
        * aws_rds_cluster.default: InvalidParameterValue: IAM role ARN value is invalid or does not include the required permissions for: AWS_ROLE_INTEGRATION
            status code: 400, request id: a2363d49-655c-4081-b3c3-42284d5d0fc9

Testing

15 tests passed (all tests)
=== RUN   TestAccAWSRDSCluster_missingUserNameCausesError
--- PASS: TestAccAWSRDSCluster_missingUserNameCausesError (3.53s)
=== RUN   TestAccAWSRDSCluster_iamAuth
--- PASS: TestAccAWSRDSCluster_iamAuth (119.17s)
=== RUN   TestAccAWSRDSCluster_takeFinalSnapshot
--- PASS: TestAccAWSRDSCluster_takeFinalSnapshot (119.18s)
=== RUN   TestAccAWSRDSCluster_importBasic
--- PASS: TestAccAWSRDSCluster_importBasic (119.78s)
=== RUN   TestAccAWSRDSCluster_EngineVersion
--- PASS: TestAccAWSRDSCluster_EngineVersion (120.45s)
=== RUN   TestAccAWSRDSCluster_namePrefix
--- PASS: TestAccAWSRDSCluster_namePrefix (121.97s)
=== RUN   TestAccAWSRDSCluster_generatedName
--- PASS: TestAccAWSRDSCluster_generatedName (122.27s)
=== RUN   TestAccAWSRDSCluster_updateTags
--- PASS: TestAccAWSRDSCluster_updateTags (124.37s)
=== RUN   TestAccAWSRDSCluster_backupsUpdate
--- PASS: TestAccAWSRDSCluster_backupsUpdate (124.55s)
=== RUN   TestAccAWSRDSCluster_updateIamRoles
--- PASS: TestAccAWSRDSCluster_updateIamRoles (124.69s)
=== RUN   TestAccAWSRDSCluster_kmsKey
--- PASS: TestAccAWSRDSCluster_kmsKey (138.46s)
=== RUN   TestAccAWSRDSCluster_basic
--- PASS: TestAccAWSRDSCluster_basic (138.89s)
=== RUN   TestAccAWSRDSCluster_encrypted
--- PASS: TestAccAWSRDSCluster_encrypted (149.33s)
=== RUN   TestAccAWSRDSCluster_Port
--- PASS: TestAccAWSRDSCluster_Port (226.14s)
=== RUN   TestAccAWSRDSCluster_EncryptedCrossRegionReplication
--- PASS: TestAccAWSRDSCluster_EncryptedCrossRegionReplication (2535.01s)

[tombuildsstuff]

LGTM 👍

[bflad]

This has been released in version 1.17.0 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!