core: Fix displaying result of VdsNotRespondingTreatment

Fixes displaying result of VdsNotRespondingTreatment command for cases
where cluster fencing policy contains skip fencing if host has live
lease on storage turned on. With this patch it's properly shown that
stop vds and restart vds was not successfull dues to host live lease on
storage.

Change-Id: Ia864b986dd453920144ad1556c9f9d020da97c20
Bug-Url: https://bugzilla.redhat.com/1090799
Signed-off-by: Martin Perina <mperina@redhat.com>