Adding EAPOL flow validation to ATT Sanity Test

Change-Id: I6be2b837564a0a49480deeb2b3c7937802775345
diff --git a/tests/functional/K8S_SystemTest.robot b/tests/functional/K8S_SystemTest.robot
index 9bdcc85..f04cc3c 100644
--- a/tests/functional/K8S_SystemTest.robot
+++ b/tests/functional/K8S_SystemTest.robot
@@ -40,6 +40,8 @@
 ${teardown_device}      false
 ${has_dataplane}        false
 
+${suppressaddsubscriber}    True
+
 # Per-test logging on failure is turned off by default; set this variable to enable
 ${container_log_dir}    ${None}
 
@@ -72,7 +74,7 @@
     ...    Validate ETCD Size    ${INFRA_NAMESPACE}    ${desired_ETCD_cluster_size}
     # Perform the sanity-test again
     Run Keyword If    ${has_dataplane}    Clean Up Linux
-    Wait Until Keyword Succeeds    ${timeout}    2s    Perform Sanity Test
+    Wait Until Keyword Succeeds    ${timeout}    2s    Perform Sanity Test    ${suppressaddsubscriber}
 
 ETCD Failure Test
     [Documentation]    Failure Scenario Test: ETCD Crash