Energy scale power capping tests.
Energy scale power capping tests.

Added:
   - Escale System On And PL Enabled
   - Escale System On And PL Disabled
   - Escale Check Settings System On Then Off
   - Escale Check Settings System Off Then On
   - Escale Change Limit At Runtime
   - Escale Disable And Enable At Runtime

Resolves  openbmc/openbmc-test-automation#912
Change-Id: I6d90137fbad4fe40b6a626cc3ac09cef338f28fe
Signed-off-by: Steven Sombar <fb37bb6ac5c2258e1cbf80690dea88925949957e@us.ibm.com>

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