timeout on virsh destroy of test env seed

[Derek Higgins]

Now that ci is somewhat more stable, The error I'm seeing most often is

From http://logs.openstack.org/73/79873/2/check-tripleo/check-tripleo-overcloud-precise/2624b9e/console.html

2014-03-12 09:00:34.010 | Calling <function virsh_destroy at 0x7f4dd700ba28> with: ['destroy', 'seed_1']
2014-03-12 11:11:01.207 | Build timed out (after 145 minutes). Marking the build as failed.

some of our virsh destory commands to the test env host don't seem to be returning