HZDistributedAtomicLong measurement code

- Part of ONOS-1767

Change-Id: I635ddde1863dffb8d68fa83e22bb7dde7c44136e
diff --git a/conf/template/hazelcast.xml.template b/conf/template/hazelcast.xml.template
index d06addc..8ca2e3f 100644
--- a/conf/template/hazelcast.xml.template
+++ b/conf/template/hazelcast.xml.template
@@ -20,6 +20,11 @@
 
   <network>
     <port auto-increment="true">__HC_PORT__</port>
+<!-- Examples to force using certain interface
+    <interfaces enabled="true">
+      <interface>192.168.200.*</interface>
+    </interfaces>
+-->
     <join>
 __HC_NETWORK__
       <aws enabled="false">