iSCSI settings aren't viable, mask for now
iSCSI settings aren't viable, mask for now

The iSCSI attempts require special consideration that is
not currently implemented.  Mask it out for now.

Change-Id: I07de1ddce7474cd53755681d1d9e7ecf0bcbf56f

openstack/pyghmi,openstack/pyghmi,stackforge/pyghmi