Ansible 2.0: modifying security groups of an existing instance in os_server

Is there a way to modify security groups attached to an instance once it is running? It appears the only way I can do it at the moment is to destroy the instance and rebuild it (not ideal).

If I modify the playbook to add a group and re-run, os_server appears to ignore the change.

`

same behaviour in 2.0.0-0.4.beta2

The current os_server module, unfortunately, does not allow for updating any server characteristics.

-Dave