Ensure XCC health sets general level
Ensure XCC health sets general level

In the event of an event that is not modeled by the IPMI sensors,
make sure that at least the health summary is correct.  Add in
a known condition that is missed by IPMI sensor modeling for detail
as well.

Change-Id: I207e137c49b4321cf4040188a84de569f55c5707

openstack/pyghmi,openstack/pyghmi,stackforge/pyghmi