Replace assertEquals with assertEqual
Replace assertEquals with assertEqual

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.

Change-Id: I04dfff271ddadaa0e5499d443948acd984ed998b

magic0704/oslo.config,varunarya10/oslo.config,JioCloud/oslo.config,tianshan/oslo.config,shad7/oslo.config