ipwrapper: wrap `ip monitor link`

Change-Id: I556459220b09fea035774ad82a0ffa4555efaf7b
Signed-off-by: Dan Kenigsberg <danken@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/20418
Reviewed-by: Antoni Segura Puimedon <asegurap@redhat.com>