Updated openstack/openstack
Project: openstack/tempest  09fcbc737fd43caa87da7e366db513a735c72572

Fixed argument parsing in run script

Replaced += with = when adding arguments to the testrargs string
to prevent the script from doubling in length with each additional
argument.

Change-Id: If0ab41d6062c83cee50f830ffd9428c1302fd997
Closes-Bug: #1325405