This adds a post-test bash script to test evacuate
in a multinode job.
This performs two tests:
1. A negative test where we inject a fault by stopping
libvirt prior to the evacuation and wait for the
server to go to ERROR status.
2. A positive where we restart libvirt, wait for the
compute service to be enabled and then evacuate
the server and wait for it to be ACTIVE.
For now we hack this into the nova-live-migration
job, but it should probably live in a different job
long-term.
Change-Id: I9b7c9ad6b0ab167ba4583681efbbce4b18941178
8327011f91