Updated verification that disabled olt device should only have default flows

Change-Id: I0421d4139ab4b16f74fc9816bf2a55148d18ca71
diff --git a/tests/dt-workflow/Voltha_DT_PODTests.robot b/tests/dt-workflow/Voltha_DT_PODTests.robot
index 4010aed..4ece40e 100755
--- a/tests/dt-workflow/Voltha_DT_PODTests.robot
+++ b/tests/dt-workflow/Voltha_DT_PODTests.robot
@@ -279,7 +279,8 @@
         ...    Verify Subscriber Access Flows Added Count DT    ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}
         ...    ${of_id}    0
         # Verify VOLTHA Flows
-        Run Keyword    Wait Until Keyword Succeeds    ${timeout}    5s    Validate OLT Flows    0
+        # OLT should only have 1 default flow for LLDP
+        Run Keyword    Wait Until Keyword Succeeds    ${timeout}    5s    Validate OLT Flows    1
         ...    ${olt_device_id}
         ${List_ONU_Serial}    Create List
         Set Suite Variable    ${List_ONU_Serial}