Make nova-live-migration voting

We merged a broken test case in Icdb3398061d0274fec8b4e10d955a4b00edf4524
as nova-live-migration job was non voting and we missed that the job
failed on the patch.

Let's make the job voting to avoid this in the future.

Change-Id: Ibe8c439da6c1ab6657b6f2618c3a72a074e24305
1 file changed