Updated openstack/openstack
Project: openstack/cinder  0a797133585ca7abf99c5dcc2069ec05a4407e7f

Improve unit tests for cinder/volume/utils.py

This commit increases the unit test coverage of cinder/volume/utils.py.
It also replaces tests using mox or stubout.

Change-Id: Idb06b37c803d94bb33b0df9d19ced8b330def2ad