Added local user automation testcase

     Verify Error While Deleting Root User

Change-Id: Ibcbc31568f0054f6dd28d88a76897b74cc433169
Signed-off-by: manashsarma <manashsarma@in.ibm.com>
diff --git a/redfish/account_service/test_user_account.robot b/redfish/account_service/test_user_account.robot
index b77c10f..d18b541 100644
--- a/redfish/account_service/test_user_account.robot
+++ b/redfish/account_service/test_user_account.robot
@@ -330,6 +330,13 @@
     List Should Contain Sub List  ${resp.dict['AssignedPrivileges']}  ${roles_dict['readOnly_privileges']}
 
 
+Verify Error While Deleting Root User
+    [Documentation]  Verify error while deleting root user.
+    [Tags]  Verify_Error_While_Deleting_Root_User
+
+    Redfish.Delete  /redfish/v1/AccountService/Accounts/root  valid_status_codes=[${HTTP_FORBIDDEN}]
+
+
 *** Keywords ***
 
 Test Teardown Execution