Add fan testing

Add power-on system fan automation tests, and
update the fan utilities.  Update the power-off
fan tests due to changes in the utilities.
Add 'Error Logs Should Exist' keyword.

Resolves openbmc/openbmc-test-automation#1174
Resolves openbmc/openbmc-test-automation#999
Resolves openbmc/openbmc-test-automation#616

Change-Id: Ic957516c53513dad16bc4cf188d6dfd20ddc5228
Signed-off-by: Steven Sombar <ssombar@us.ibm.com>
4 files changed