Add missing Test Tags in extended test bucket

Change-Id: Id43a43dfc4e02a968ceca225036650f9943ebb68
Signed-off-by: Sridevi Ramesh <sridevra@in.ibm.com>
diff --git a/redfish/extended/test_power_capping.robot b/redfish/extended/test_power_capping.robot
index 99b1583..e46623f 100644
--- a/redfish/extended/test_power_capping.robot
+++ b/redfish/extended/test_power_capping.robot
@@ -18,7 +18,7 @@
 Suite Setup      Suite Setup Execution
 Test Teardown    Test Teardown Execution
 
-
+Test Tags        Power_Capping
 
 *** Variables ****