Updated openstack/openstack
Project: openstack/neutron  0d9e0e1ca6e886f7f86d0f9888d7447b10891e97
null
Utilizes assertIsNone and assertIsNotNone

Using assertEqual/assertNotEqual to test if an element
is or is not None is too python2.4.
Our unit testing framework supports assertIsNone and assertIsNotNone
which were created for these types of tests.

Partial-bug: #1230028

Change-Id: Ie0bddae642f7973ee8b0e00164415f8d87de387e