Created a variable for default admin user

Changes:
 - Added variable OPENBMC_ADMIN_USERNAME with value admin to lib/resource.robot

Tested: - NA
Change-Id: I48d3d5d6a2db7ec819ffd4ecfb79fe8a9a218d33
Signed-off-by: Anusha Dathatri <adathatr@in.ibm.com>
diff --git a/lib/resource.robot b/lib/resource.robot
index 9629bae..4624d7e 100755
--- a/lib/resource.robot
+++ b/lib/resource.robot
@@ -30,6 +30,7 @@
 ${OPENBMC_PASSWORD}    0penBmc
 ${REST_USERNAME}       root
 ${REST_PASSWORD}       0penBmc
+${OPENBMC_ADMIN_USERNAME}  admin
 ${OPENBMC_ADMIN_PASSWORD}  0penBmc
 ${SERVICE_USER_PASSWORD}   0penBmc