Add option to look for IP based on iface

Change-Id: Icc186386b73f262224aad273040ace9ff5ce1bd4
diff --git a/TestON/tests/HA/HAswapNodes/HAswapNodes.params b/TestON/tests/HA/HAswapNodes/HAswapNodes.params
index 7253612..d3729a4 100644
--- a/TestON/tests/HA/HAswapNodes/HAswapNodes.params
+++ b/TestON/tests/HA/HAswapNodes/HAswapNodes.params
@@ -19,7 +19,10 @@
     #CASE17: Check for basic functionality with distributed primitives
     <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</testcases>
 
-    <serverPort>8000</serverPort>
+    <server>
+        <port>8000</port>
+        <interface>eth0</interface>
+    </server>
     <apps></apps>
     <ONOS_Configuration>
         <org.onosproject.net.intent.impl.compiler.IntentConfigurableRegistrator>