[vcloud_director] update name, description and storage_profile for vm
updated documentation for put_vm
Merge pull request #2452 from alphagov/update_vm_storage_profile

[vcloud_director] update name, description and storage_profile for vm
[aws|rds] Implement `ready?` for subnet group.
Merge pull request #2453 from axyjo/aws_rds_subnet_group_ready

[aws|rds] Implement `ready?` for subnet group.