infra: Add filecontrol module

Added module with fcntl convenience functions

Change-Id: I4f455711d81e84db600647a2d5d80a5e7cadd5e2
Signed-off-by: Dima Kuznetsov <dkuznets@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/35918
Reviewed-by: mooli tayer <mtayer@redhat.com>
Reviewed-by: Yaniv Bronhaim <ybronhei@redhat.com>
Reviewed-by: Saggi Mizrahi <smizrahi@redhat.com>