Fix pexpect isssues/refactor arping command

Change-Id: I03a1db22a176b5dae4f1b02cd8059bd1acfb1d3a
diff --git a/TestON/tests/FUNCintent/FUNCintent.topo b/TestON/tests/FUNCintent/FUNCintent.topo
index 8b30c31..617e8c0 100755
--- a/TestON/tests/FUNCintent/FUNCintent.topo
+++ b/TestON/tests/FUNCintent/FUNCintent.topo
@@ -40,7 +40,7 @@
         </ONOScli3>
 
         <Mininet1>
-            <host>localhost</host>
+            <host>OCN</host>
             <user>admin</user>
             <password></password>
             <type>MininetCliDriver</type>