Updated openstack/openstack
Project: openstack-infra/devstack-gate  2807cd9235f5b43c2d5ac91a99b8f5b7405b5d7f
null
Use the default home directory location for tempest.

The current location is a git checkout.  When we update that repo
and 'git clean' it, it removes any user configuration we may have
set for the tempest user (such as pip mirror locations).

Change-Id: Ie4040c8f44592e85ad0d093490aee71b298eec10