Create a basic plugin for IPMI enablement

Create a plugin which pulls in OpenIPMI and presents a basic
status screen which shows fan speeds as a cursory proof of IPMI
working. No other functionality is presented at this time, though
dropping to a console and using ipmitool yields full functionality.

Change-Id: I74c53ffec3f9eb11312ccffec7c5b7083325d94a
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=821000
Signed-off-by: Ryan Barry <rbarry@redhat.com>