Moving getSELinuxEnforeMode to utils

Change-Id: I801adfb0d8835ef9083f24ee5732219b8f719315
Signed-off-by: Yaniv Bronhaim <ybronhei@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/34446
Reviewed-by: Francesco Romani <fromani@redhat.com>
Reviewed-by: Dan Kenigsberg <danken@redhat.com>