Utilizes assertNotIn

Using assertTrue and the 'not in' operator to test
if an element is in a sequence is too python2.4.
Our unit testing framework supports assertNotIn
which was created for these types of tests.

Fixes bug #1230028

Change-Id: Ibaf6c73c514b9ad27f8f37eb3f1043e31dbfdcc1
Merge "Utilizes assertNotIn"