docs/resource/aws_emr_cluster: Ensure kerberos_attributes arguments note that they cannot perform drift detection
docs/resource/aws_emr_cluster: Ensure kerberos_attributes arguments note that they cannot perform drift detection

The API does not return the actual values for these attributes, so we can only suggest ignore_changes when importing.

kjmkznr/terraform-provider-aws,kjmkznr/terraform-provider-aws,terraform-providers/terraform-provider-aws,kjmkznr/terraform-provider-aws,terraform-providers/terraform-provider-aws,terraform-providers/terraform-provider-aws,kjmkznr/terraform-provider-aws,terraform-providers/terraform-provider-aws