This is a test of installing openstack and then seeing if it works.
OpenStack components do not need test-requirements to operate,
that's why they are test-requirements.
Additionally, as we look forward to depsolver pip, this is going
to screw us because we don't apply constraints to linters, which
are expressed in - you guessed it, test-requirements.
Change-Id: I8f24b839bf42e2fb9803dc7df3a30ae20cf264eb
(cherry picked from commit 09b5b05c47)
(cherry picked from commit d3ab04bcb1)
6a500ad269