ipwrapper Monitor: fix for deleted links

The previous parsing would not work when a link was deleted. This
patch fixes it and sets the state as DELETED on those cases.

Change-Id: I2220d5b196efe1cc34821ff8145fbddcc431d7b9
Signed-off-by: Antoni S. Puimedon <asegurap@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/21534
Reviewed-by: Dan Kenigsberg <danken@redhat.com>