Add option to look for IP based on iface

Change-Id: Icc186386b73f262224aad273040ace9ff5ce1bd4
diff --git a/TestON/tests/HA/HAscaling/HAscaling.params b/TestON/tests/HA/HAscaling/HAscaling.params
index 5b5358d..ff4e306 100644
--- a/TestON/tests/HA/HAscaling/HAscaling.params
+++ b/TestON/tests/HA/HAscaling/HAscaling.params
@@ -20,7 +20,10 @@
     <testcases>1,[2,8,21,3,8,4,5,14,16,17]*1,[6,8,3,7,4,15,17,9,8,4,10,8,4,11,8,4,12,8,4]*13,13</testcases>
 
     <scaling>1,3b,3,5b,5,7b,7,7b,5,5b,3,3b,1</scaling>
-    <serverPort>8000</serverPort>
+    <server>
+        <port>8000</port>
+        <interface>eth0</interface>
+    </server>
     <apps></apps>
     <ONOS_Configuration>
         <org.onosproject.net.intent.impl.compiler.IntentConfigurableRegistrator>