resource/aws_elasticache_cluster: Add replication_group_id argument

[bflad]

Continuation of #2287, adding acceptance tests, additional documentation, and fixing interface conversion panics.

Closes #2218

16 tests passed (all tests)
=== RUN   TestAccAWSElasticacheCluster_ReplicationGroupID_InvalidAttributes
--- PASS: TestAccAWSElasticacheCluster_ReplicationGroupID_InvalidAttributes (2.93s)
=== RUN   TestAccAWSElasticacheCluster_NumCacheNodes_Redis_Ec2Classic
--- PASS: TestAccAWSElasticacheCluster_NumCacheNodes_Redis_Ec2Classic (3.53s)
=== RUN   TestAccAWSElasticacheCluster_AZMode_Redis_Ec2Classic
--- PASS: TestAccAWSElasticacheCluster_AZMode_Redis_Ec2Classic (429.82s)
=== RUN   TestAccAWSElasticacheCluster_AZMode_Memcached_Ec2Classic
--- PASS: TestAccAWSElasticacheCluster_AZMode_Memcached_Ec2Classic (432.36s)
=== RUN   TestAccAWSElasticacheCluster_vpc
--- PASS: TestAccAWSElasticacheCluster_vpc (607.51s)
=== RUN   TestAccAWSElasticacheCluster_importBasic
--- PASS: TestAccAWSElasticacheCluster_importBasic (637.74s)
=== RUN   TestAccAWSElasticacheCluster_multiAZInVpc
--- PASS: TestAccAWSElasticacheCluster_multiAZInVpc (668.20s)
=== RUN   TestAccAWSElasticacheCluster_basic
--- PASS: TestAccAWSElasticacheCluster_basic (823.68s)
=== RUN   TestAccAWSElasticacheCluster_NodeTypeResize_Memcached_Ec2Classic
--- PASS: TestAccAWSElasticacheCluster_NodeTypeResize_Memcached_Ec2Classic (824.92s)
=== RUN   TestAccAWSElasticacheCluster_NodeTypeResize_Redis_Ec2Classic
--- PASS: TestAccAWSElasticacheCluster_NodeTypeResize_Redis_Ec2Classic (846.56s)
=== RUN   TestAccAWSElasticacheCluster_ReplicationGroupID_SingleReplica_Ec2Classic
--- PASS: TestAccAWSElasticacheCluster_ReplicationGroupID_SingleReplica_Ec2Classic (1045.40s)
=== RUN   TestAccAWSElasticacheCluster_ReplicationGroupID_MultipleReplica_Ec2Classic
--- PASS: TestAccAWSElasticacheCluster_ReplicationGroupID_MultipleReplica_Ec2Classic (1109.78s)
=== RUN   TestAccAWSElasticacheCluster_decreasingCacheNodes
--- PASS: TestAccAWSElasticacheCluster_decreasingCacheNodes (1112.74s)
=== RUN   TestAccAWSElasticacheCluster_EngineVersion_Redis_Ec2Classic
--- PASS: TestAccAWSElasticacheCluster_EngineVersion_Redis_Ec2Classic (1133.76s)
=== RUN   TestAccAWSElasticacheCluster_EngineVersion_Memcached_Ec2Classic
--- PASS: TestAccAWSElasticacheCluster_EngineVersion_Memcached_Ec2Classic (1155.84s)
=== RUN   TestAccAWSElasticacheCluster_snapshotsWithUpdates
--- PASS: TestAccAWSElasticacheCluster_snapshotsWithUpdates (1580.68s)

[bflad]

This has been released in version 1.13.0 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!