Grant privs on postgres test DB to test DB user.

Grant ALL priveleges on the Jenkins slave postgres test DB to the
openstack_citest test user.

Change-Id: Ib0f8d2b5ccb90f43de3b41c9838366ae72591ce2
Reviewed-on: https://review.openstack.org/20759
Reviewed-by: Kurt Taylor <krtaylor@us.ibm.com>
Approved: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Tested-by: Jenkins