Updated openstack/openstack
Project: openstack/heat  63b8d8ab5d7abbc8eab1eb968ffeaa80a957bef4
null
Remove usage of mox class

We have a base test class already that does the cleaning, we don't need
to use mox base class, which uses a different pattern for the stub
object.

Change-Id: I5fce772bd330f9fb0fca5821ab200b55c0fb7358