Updated openstack/openstack
Project: openstack/cliff  db4eef59e53931413c6680abde2cb2f491d1de53

Do not allow wheels for stable tests

The tests against stable versions of consuming projects download the
release packages from the PyPI mirror. Now that there are wheels
available, installing those packages breaks. Rather than completely
rewrite the test scripts, force the sdist to be downloaded.

Change-Id: I574610b934a40aa4e4c017d1f247cc14b81a8160