Updated openstack/openstack
Project: openstack/django_openstack_auth  7b8301926071963bdb237f08e95f23d4cdb66b43
null
Use mox3 rather than mox

mox3 is a port of mox to Python 3, and it's also compatible with Python 2.6 and
2.7.

Partial-Bug: 1287323
Change-Id: I6caad9da450a6821ba5d2dab607106ddf9d743fd