packaging: setup: updated read-only user permissions

This new implementation updates creating a read only
user with correct permissions.

Change-Id: I6044b4561606427ac32686fcd46e02032ce4347b
Bug-Url: https://bugzilla.redhat.com/990095
Signed-off-by: Alex Lourie <alourie@redhat.com>
packaging: setup: call psql with correct env

Change-Id: I5464894fca921a7d3fdd41fd554dcb6b9805a785
Bug-Url: https://bugzilla.redhat.com/991760
Signed-off-by: Alex Lourie <alourie@redhat.com>