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/OpenstackSwitchingArpHandler.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingArpHandler.java
index b78328c..a58053ac 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingArpHandler.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingArpHandler.java
@@ -136,7 +136,7 @@
     private String gatewayMac = DEFAULT_GATEWAY_MAC_STR;
 
     @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;
 
     private final InternalPacketProcessor packetProcessor = new InternalPacketProcessor();