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 <gkeishin@in.ibm.com>
diff --git a/systest/collection/bmc_collect_esels.robot b/systest/collection/bmc_collect_esels.robot
index 8f09307..bbf35d2 100644
--- a/systest/collection/bmc_collect_esels.robot
+++ b/systest/collection/bmc_collect_esels.robot
@@ -58,7 +58,7 @@
     [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