Updated openstack/openstack
Project: openstack/glance  5b8474ef128057e5bb5e06bdc4c972e951f19c81
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Use assertEqual instead of assertEquals in unit tests

The method assertEquals has been deprecated since python 2.7.
http://docs.python.org/2/library/unittest.html#deprecated-aliases
Also in Python 3, a deprecated warning is raised when using assertEquals
therefore we should use assertEqual instead.

Change-Id: Ic8f152766d70146300b74f3803d7dab1e4de50e2
Closes-Bug: #1256734