Retry if topo comparison fails and increase sleep time

Change-Id: Ie18a94224566f716e4ae163e75ce6eed0e2ff112
diff --git a/TestON/tests/CHOtest/CHOtest.params b/TestON/tests/CHOtest/CHOtest.params
index cf46ccf..5abf6f9 100644
--- a/TestON/tests/CHOtest/CHOtest.params
+++ b/TestON/tests/CHOtest/CHOtest.params
@@ -91,7 +91,7 @@
         <SwitchDiscovery>10</SwitchDiscovery>
         <IntentPurgeDelay>15</IntentPurgeDelay>
         <CheckIntentDelay>8</CheckIntentDelay>
-        <topoCheckDelay>5</topoCheckDelay>
+        <topoCheckDelay>15</topoCheckDelay>
         <pingSleep>3</pingSleep>
     </timers>