For compliance with the Project Testing Interface as described in:
https://governance.openstack.org/tc/reference/project-testing-interface.html
For more detials information, please refer to:
http://lists.openstack.org/pipermail/openstack-dev/2017-December/125710.html
Change-Id: Ib02738563f5ae3712e1074a3b08c693ea7cdea79
(cherry picked from commit b8ad99f30b)