Updated openstack/openstack
Project: openstack/tempest  1b8f20ad0f59bdbc95dc05befaef06ba94a50e26
null
assertTrue to assertIn

* replacing the assertTrue where simply replaceable with assertIn
* The assertTrue(len(foo)>1) style extended with str(foo) details,
  where expected len is greater than 1.

Change-Id: I7515e879e3e24ce041a4fcae63d9d4a5f257f37d