vdsm-reg: make vdsm-reg-setup PEP8-happy

Change-Id: Ibd9487677aae58b0dd401aed597b37dfa1fb5401
Signed-off-by: Dima Kuznetsov <dkuznets@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/34980
Reviewed-by: Yaniv Bronhaim <ybronhei@redhat.com>
Tested-by: Yaniv Bronhaim <ybronhei@redhat.com>
Reviewed-by: Dan Kenigsberg <danken@redhat.com>