Description of problem:

In beaker webUI go to the system power settings and select
type = virsh
release action = power off

After I provision the system for the first time and cancel the job it shuts down. Then I schedule new job (provision again) and it fails. 

On the lab controller (/var/log/cobbler/tasks/) I see that initial poweroff failed. Cobbler tries to execute:

# /usr/bin/virsh --connect qemu+ssh://root.com/system destroy tester1

And gets the error:

error: Failed to destroy domain tester1
error: Requested operation is not valid: domain is not running


Version-Release number of selected component (if applicable):
cobbler-2.0.10-1.el5
beaker-server-0.6.8-5.el5

How reproducible:
always

Steps to Reproduce:
1. add to the lab a virtual system and configure remote power using virsh
2. configure release action = power off
3. Perform 1 test job and cancel it (or wait until it completes)
4. Start new job
  
Actual results:
New job fails

Expected results:
New job starts.

Additional info: