Updated openstack/openstack
Project: openstack/python-cinderclient  b2b04892838296c9e5f1d20a0b9a88d8b2579279

Use newer features from keystoneclient

There are a number of functions that were implemented in keystoneclient
in response to needs from cinder and other clients.

Now that these were released in 0.11 cinderclient should make use of
them rather than keep its own versions.

Change-Id: I6444fc5bfd2d0505f9a7eb2c6068ab945ae5bb9b