ucs-m powerstatus fails when already off

[Chris Ricker]

One smaller bug with the new fence_ucs script. powerstatus errors when the node is already off

poweron,poweroff,reboot all tested fine though

root@ci-build:~# cobbler system powerstatus --name=ci-os-con1
task started: 2014-06-04_124223_power
task started (id=Power management (status), time=Wed Jun 4 12:42:23 2014)
cobbler power configuration is:
      type : ucs
      address: 172.20.231.30:org-CI
      user : admin
      id : CI_OS_Con1.C1B6
running: /usr/sbin/fence_ucs
received on stdout: Status: ON

received on stderr:
*** TASK COMPLETE ***
root@ci-build:~# cobbler system poweroff --name=ci-os-con1
task started: 2014-06-04_124234_power
task started (id=Power management (off), time=Wed Jun 4 12:42:34 2014)
cobbler power configuration is:
      type : ucs
      address: 172.20.231.30:org-CI
      user : admin
      id : CI_OS_Con1.C1B6
running: /usr/sbin/fence_ucs
received on stdout: Success: Powered OFF

received on stderr:
*** TASK COMPLETE ***
root@ci-build:~# cobbler system powerstatus --name=ci-os-con1
task started: 2014-06-04_124242_power
task started (id=Power management (status), time=Wed Jun 4 12:42:42 2014)
cobbler power configuration is:
      type : ucs
      address: 172.20.231.30:org-CI
      user : admin
      id : CI_OS_Con1.C1B6
running: /usr/sbin/fence_ucs
received on stdout: Status: OFF

received on stderr:
running: /usr/sbin/fence_ucs
received on stdout: Status: OFF

received on stderr:
running: /usr/sbin/fence_ucs
received on stdout: Status: OFF

received on stderr:
running: /usr/sbin/fence_ucs
received on stdout: Status: OFF

received on stderr:
running: /usr/sbin/fence_ucs
received on stdout: Status: OFF

received on stderr:
Exception occured: <class 'cobbler.cexceptions.CX'>
Exception value: 'command failed (rc=2), please validate the physical setup and cobbler config'
Exception Info:
  File "/usr/lib/python2.7/dist-packages/cobbler/utils.py", line 129, in die
    raise CX(msg)

failed to execute power task on ci-os-con1
*** TASK COMPLETE ***
root@ci-build:~#