core: fix wrong audit log on stop vm with hibernation vols

While stopping VM which is not suspended but has hibernation volumes (it
could happen if we didn't manage to remove them when the VM reached UP
state), the audit log described the operation as stopping suspended VM
which is incorrect. This patch change this audit log such that the VM
won't be described as suspended VM.

Change-Id: If4ee5275477e989930a4c284a211755ebff76e33
Signed-off-by: Arik Hadas <ahadas@redhat.com>