Configfile.py: improve indentation of multiline if statments.

Change-Id: I3783bf50d55c54ec38c3240f66b4a14296f244a8
Signed-off-by: Mooli Tayer <mtayer@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/27825
Reviewed-by: Yaniv Bronhaim <ybronhei@redhat.com>
Reviewed-by: Dan Kenigsberg <danken@redhat.com>