Replaced "Initiate Host PowerOff/Poweron" with "REST Power On/Off"

Change-Id: I287a739f1a8ca609e30f53efc77b1c33d1250b75
Signed-off-by: Rahul Maheshwari <rahulmaheshwari@in.ibm.com>
diff --git a/gui/obmc_gui/lib/resource.robot b/gui/obmc_gui/lib/resource.robot
index 088f645..17252f3 100644
--- a/gui/obmc_gui/lib/resource.robot
+++ b/gui/obmc_gui/lib/resource.robot
@@ -361,10 +361,10 @@
     # expectedState    Test initial host state.
 
     Run Keyword If  '${expectedState}' == 'Running'
-    ...  Initiate Host Boot
+    ...  REST Power On  stack_mode=skip  quiet=1
 
     Run Keyword If  '${expectedState}' == 'Off'
-    ...  Initiate Host PowerOff
+    ...  REST Power Off  stack_mode=skip  quiet=1
 
 Launch Browser And Login OpenBMC GUI
     [Documentation]  Launch browser and log into openbmc GUI.