Add a comment about not using assertTrue
Add a comment about not using assertTrue

Change-Id: I21be4f96a1a12ace1d579d50a2cd91e0fa899fb6

rajalokan/keystone,ilay09/keystone,openstack/keystone,rajalokan/keystone,mahak/keystone,openstack/keystone,mahak/keystone,ilay09/keystone,ilay09/keystone,rajalokan/keystone,mahak/keystone,openstack/keystone