packaging: setup: fix local state dirs ownership

- clean up /var/tmp/ovirt-engine if it contains at least
  one file not owned by engine
- chown -Rh ovirt:ovirt /var/lib/ovirt-engine/deployments

Previous versions mixed root/ovirt ownership in those directories

Change-Id: I180fa0b1c3ded975c052405126819d91524a829f
Signed-off-by: Sandro Bonazzola <sbonazzo@redhat.com>