Fixed some PMD issues in the SDN-IP module

Change-Id: Iaf002e70c1a00f0008edef5e77b91579acf146aa
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/RibUpdate.java b/src/main/java/net/onrc/onos/apps/bgproute/RibUpdate.java
index 0faa94f..c9d48e7 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/RibUpdate.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/RibUpdate.java
@@ -1,15 +1,15 @@
 package net.onrc.onos.apps.bgproute;
 
 public class RibUpdate {
+    private final Operation operation;
+    private final Prefix prefix;
+    private final RibEntry ribEntry;
+    
     public enum Operation {
         UPDATE,
         DELETE
     }
 
-    private final Operation operation;
-    private final Prefix prefix;
-    private final RibEntry ribEntry;
-
     public RibUpdate(Operation operation, Prefix prefix, RibEntry ribEntry) {
         this.operation = operation;
         this.prefix = prefix;