Update Legacy REST to Redfish Power on

Changes:
    - Redfish power replaces legacy REST code.

Tested:
    - Ran from sandbox with changes

Resolves openbmc/openbmc-test-automation/issues#2257

Change-Id: Ic4ab0926d5420361f6caec07098e433bd7cb2716
Signed-off-by: George Keishing <[email protected]>

Author: gkeishin

systest/collection/bmc_collect_esels.robot

@@ -58,7 +58,7 @@ Suite Setup Execution
     [Documentation]  Do test suite setup tasks.
 
     Set Log Level  DEBUG
-    REST Power On  stack_mode=skip
+    Redfish Power On  stack_mode=skip
 
 
 Suite Teardown Execution