Make the openstack_citest postgres user superuser.
Make the openstack_citest postgres user superuser.

Make the openstack_citest postgres user (added to Jenkins slaves'
postgres servers a postgres superuser). This will hopefully allow the
nova postgres tests to run.

Also, remove the database_grant that was previously being performed.
This was unnecessary as the postgresql::db['openstack_citest'] define
was taking care of the grant.

Change-Id: Ib43a4acd19f8460de7ddf9f593b0dcd73fb6467c
Reviewed-on: https://review.openstack.org/20947
Reviewed-by: Jeremy Stanley <98883b97e35b7bb1ac282bb863f2e9d917db0454@yuggoth.org>
Approved: Clark Boylan <635fc31d01fa593720982fa0568e87170cedbe2c@gmail.com>
Reviewed-by: Clark Boylan <635fc31d01fa593720982fa0568e87170cedbe2c@gmail.com>
Tested-by: Jenkins

open-switch/infra_puppet-jenkins,open-switch/infra_puppet-jenkins