Make sure we don't get confused by someone else having created /opt/dell.

Instead, check to be certian that we are in fact an admin node before creating
a new client for ourselves.
Merge pull request #13 from VictorLowther/pull-req-master-eead8c377fb1684105b7061b782b80385cb8711d

Fix up chef barclamp setup routine [1/1]