feat: rds cluster output #256

Job	Run time
terraform-module / CI / Format HCL	38s
terraform-module / CI / bats	37s
terraform-module / CI / Find modules	3s
terraform-module / Readme	0s
terraform-module / CI / Validate Codeowners (syntax)	6s
terraform-module / CI / Validate Codeowners (owners)	0s
terraform-module / CI / Labels Validate	1s
terraform-module / CI / Lint (.)	11s
terraform-module / CI / Lint (./examples/basic)	19s
terraform-module / CI / Lint (./examples/complete)	19s
terraform-module / CI / Lint (./examples/enhanced_monitoring)	20s
terraform-module / CI / Lint (./examples/postgres)	13s
terraform-module / CI / Lint (./examples/serverless_mysql)	16s
terraform-module / CI / Lint (./examples/serverless_mysql57)	18s
terraform-module / CI / Lint (./examples/serverlessv2_postgres)	20s
terraform-module / CI / Lint (./examples/with_cluster_parameters)	19s
terraform-module / ci	1s
terraform-module / Release	0s
	4m 1s

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