Update action_power.py to support fence_ipmilan

Regex in action_power.py couldn't handle fence_ipmilan output:

Getting status of IPMI:XXX.XXX.XXX.XXX...Chassis power = On
Done
Merge pull request #900 from jmaas/master

PEP8 - cobbler/action_replicate.py
Merge pull request #899 from aka-butters/master

Update action_power.py to support fence_ipmilan
Merge pull request #901 from jmaas/master

PEP8 - cobbler/action_check.py