Patch set [1] fixed timing issues related to the server functional
tests. As part of the review, additional enhancements were
suggested. This patch set provides those enhancements. In particular,
the functional tests will now check for the cirros256 flavor and
the cirros-*-uec image.
[1] https://review.openstack.org/#/c/313870/
Change-Id: I7fe18e26b3d09db92bbe669ffafcd16618cae383