added stats command

Change-Id: Id6ac04e116858c4a105329ddcf5557fee93dfc8d
diff --git a/core/api/src/main/java/org/onlab/onos/net/statistic/DefaultLoad.java b/core/api/src/main/java/org/onlab/onos/net/statistic/DefaultLoad.java
index 1826dde..f0f890a 100644
--- a/core/api/src/main/java/org/onlab/onos/net/statistic/DefaultLoad.java
+++ b/core/api/src/main/java/org/onlab/onos/net/statistic/DefaultLoad.java
@@ -1,5 +1,6 @@
 package org.onlab.onos.net.statistic;
 
+import com.google.common.base.MoreObjects;
 import org.onlab.onos.net.flow.FlowRuleProvider;
 
 /**
@@ -53,4 +54,11 @@
     public long time() {
         return time;
     }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper("Load").add("rate", rate())
+                .add("latest", latest()).toString();
+
+    }
 }