Returns a list of DBSubnetGroup descriptions.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/rds/describe-db-subnet-groups.html
| aws rds describe-db-subnet-groups --region |
| GitHub - dgnorth/drift-aws: AWS tools and integration for Drift : http://github.com/dgnorth/drift-aws |
| aws rds describe-db-subnet-groups --query DBSubnetGroups[ |
| amazon web services - Assign RDS to a VPC using AWS CLI - Stack Overflow : http://stackoverflow.com/questions/46625572/assign-rds-to-a-vpc-using-aws-cli |