Utilizes assertIn
Utilizes assertIn

Using assertTrue and the 'in' operator to test
if an element is in a sequence is too python2.4.
Our unit testing framework supports assertIn
which was created for these types of tests.

Fixes bug #1230028

Change-Id: I8a9147fa9982644067ff45c73e116d88845e47e3

stackforge/networking-nec,openstack/networking-nec,stackforge/networking-nec,openstack/networking-nec