Redfish BMC Reset Operation must tolerate logout error
Redfish BMC Reset Operation must tolerate logout error

- When a BMC reset is done, naturally the BMC quits communicating and
  therefore the logout command may fail.  Added code to tolerate this failure.
- Also capitalized "Redfish" where appropriate (cosmetic)
- Removed code to check REST resp.status.  This is now done automatically by
  redfish_plus.py.

Change-Id: I4ffcaf7c8902c90eb807ea1b87915ae305ddf5e4
Signed-off-by: Michael Walsh <10404802c7de463f402c4a18638106ca1b12ef61@us.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation