Code review comment for lp:~nttdata/nova/live-migration

Hi, Rick!

Fixed based on your comments.
One thing I note that I removed libvirt-dependant test in test_virt.py for non-libvirt environment developers.
(At first I was trying to mock/FakeLibvirt as much as I could, but eventually tests become not so meaningful :) )

Hope your feedback..

Kei