Added service login automation testcase

-- Verify Service User Sets Admin Password

Change-Id: I96e85619c59558007eb98c4db8fee91111584ca6
Signed-off-by: manashsarma <manashsarma@in.ibm.com>
diff --git a/lib/resource.robot b/lib/resource.robot
index 710fdb1..4b7b360 100755
--- a/lib/resource.robot
+++ b/lib/resource.robot
@@ -30,6 +30,8 @@
 ${OPENBMC_PASSWORD}    0penBmc
 ${REST_USERNAME}       root
 ${REST_PASSWORD}       0penBmc
+${OPENBMC_ADMIN_PASSWORD}  0penBmc
+${SERVICE_USER_PASSWORD}   0penBmc
 
 ${CHASSIS_ID}  chassis
 ${COMPONENT_NAME_OF_POWER_SUPPLY}  powersupply