Fix checkstyle whitespace issues - WHITESPACE ONLY

Change-Id: Ic205c1afd639c6008d61d9de95cb764eeb6238ca
diff --git a/src/main/java/net/onrc/onos/core/registry/ControllerService.java b/src/main/java/net/onrc/onos/core/registry/ControllerService.java
index e1e15e9..3f96a3e 100644
--- a/src/main/java/net/onrc/onos/core/registry/ControllerService.java
+++ b/src/main/java/net/onrc/onos/core/registry/ControllerService.java
@@ -1,19 +1,18 @@
 package net.onrc.onos.core.registry;
 
 
-
 //@JsonRootName("controller")
 public class ControllerService {
 
-	private String controllerId;
-	
-	public ControllerService(){
-		this("");
-	}
-	
-	public ControllerService(String controllerId) {
-		this.controllerId = controllerId;
-	}
+    private String controllerId;
+
+    public ControllerService() {
+        this("");
+    }
+
+    public ControllerService(String controllerId) {
+        this.controllerId = controllerId;
+    }
 
     public void setControllerId(String controllerId) {
         this.controllerId = controllerId;