core: VdsNotRespondingTreatment Job is not marked as finished.

Once a host is not reachable and VdsNotRespondingTreatment job runs,
the job is always marked as STARTED - never FINISHED/FAILS. This
patch solves this

Change-Id: I9d3d6bc9f409bbcdd5a6b7d2201d8d6eef61ecf5
Bug-Url: https://bugzilla.redhat.com/1075500
Signed-off-by: lzelkha@redhat.com <lzelkha@redhat.com>