configuring selinux allowing qemu-kvm to generate coredumps.

this is a hack until we replce coredumping with abrt.

Change-Id: Ia22181fe0c60ccab1cc8004213e216292ccc8283
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1005031
Signed-off-by: Mooli Tayer <mtayer@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/20705
Reviewed-by: Dan Kenigsberg <danken@redhat.com>
Reviewed-by: Yaniv Bronhaim <ybronhei@redhat.com>