packaging: setup: test only config file db password

Testing also env breaks unattended clean setup.

Bug-Url: https://bugzilla.redhat.com/1094016
Bug-Url: https://bugzilla.redhat.com/1100281
Change-Id: I7a721ce3322bab5ea972e43bd8155beb9b447f30
Signed-off-by: Yedidyah Bar David <didi@redhat.com>