rbd: add params and deprecate glance_api_version

- Add all cinder rbd params
- Update documentation/tests
- Deprecate glance_api_version to avoid duplicate definition
  with cinder::glance class.
  (use glance_api_version of cinder::glance class instead.)

Change-Id: I50cb2b3deb4bf89b374c063f61eea99e1885906e