Fixes default arp mode to proxy in OpenstackNetworking app.

Change-Id: I785f409c57985ff28389251b075df3cca027be0b
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackRoutingArpHandler.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackRoutingArpHandler.java
index e75b9de..d7bcc7f 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackRoutingArpHandler.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackRoutingArpHandler.java
@@ -149,7 +149,7 @@
     // TODO: need to find a way to unify aprMode and gatewayMac variables with
     // that in SwitchingArpHandler
     @Property(name = ARP_MODE, value = DEFAULT_ARP_MODE_STR,
-            label = "ARP processing mode, broadcast (default) | proxy ")
+            label = "ARP processing mode, broadcast | proxy (default)")
     protected String arpMode = DEFAULT_ARP_MODE_STR;
 
     protected String gatewayMac = DEFAULT_GATEWAY_MAC_STR;