Description of problem: https://review.gerrithub.io/#/c/237293
Just to clarify because I have seen some confusion about this bug: the "wrong" script is the one which is documented upstream to run tempest: http://docs.openstack.org/developer/tempest/overview.html The bug is about switching to a wrapper script which was added to the midstream redhat-openstack/tempest repo adding some improvement over the upstream one.
*** This bug has been marked as a duplicate of bug 1234613 ***