Modifies a cluster subnet group to include the specified list of VPCsubnets.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/redshift/modify-cluster-subnet-group.html
| aws redshift modify-cluster-subnet-group --cluster-subnet-group-name mysubnetgroup --subnet-ids subnet-763fdd1 subnet-ac830e9 |
| modify-cluster — AWS CLI 1.16.13 Command Reference : http://docs.aws.amazon.com/cli/latest/reference/redshift/modify-cluster-subnet-group.html |