fixing pyflakes errors

Change-Id: I54dad2edc73c3922bdb8c97e6fa036a3dfcf683b
Signed-off-by: Yaniv Bronhaim <ybronhei@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/35026
Reviewed-by: Dan Kenigsberg <danken@redhat.com>