Replace assertEquals to assertEqual

[Zhongyue Luo]

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.

[ZhiQiang Fan (aji-zqfan)]

when would the hacking 0.8 be released? i think it is better to let hacking do this check automatically, currently, i agree with you, but regularly fix this issue (along with the assertTrue/assertFalse) is not efficient, so could you contact the maintainers of hacking? or we could introduce hacking hook like nova does (which is deprecated by Mark McClain)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/45385
Committed: http://github.com/openstack/neutron/commit/902dc88b4c511859f164fed4c4ac8ce0c60b09ee
Submitter: Jenkins
Branch: master

commit 902dc88b4c511859f164fed4c4ac8ce0c60b09ee
Author: Zhongyue Luo <email address hidden>
Date: Fri Sep 6 15:27:20 2013 +0800

    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
    therefore we should use assertEqual instead.

    Fixes bug #1221601

    Change-Id: Id502cfbc210c6c3fe0a256d5350e159ffa220141