Added test suite for GUI Server Led page

Signed-off-by: Anusha Dathatri <adathatr@in.ibm.com>
Change-Id: I0f0f1250a0730be9367e9b8f9035401277fa8ada
diff --git a/gui/data/resource_variables.py b/gui/data/resource_variables.py
index 5d0efbd..5eee995 100644
--- a/gui/data/resource_variables.py
+++ b/gui/data/resource_variables.py
@@ -80,6 +80,7 @@
     xpath_select_reboot_bmc = "//a[@href='#/server-control/bmc-reboot']"
     xpath_select_ldap = "//a[@href='#/access-control/ldap']"
     xpath_select_server_health = "//a[@href='#/server-health/event-log']"
+    xpath_select_server_led = "//a[@href='#/server-control/server-led']"
 
     # Power operation elements needed for power on.
     header_wrapper = "3"