Aggregate system metrics using metrics service

Change-Id: I617fa21973b7e01b92f311a6fa5687e1f0f870c2
diff --git a/utils/misc/src/main/java/org/onlab/metrics/MetricsComponent.java b/utils/misc/src/main/java/org/onlab/metrics/MetricsComponent.java
index cc8fe83..9103921 100644
--- a/utils/misc/src/main/java/org/onlab/metrics/MetricsComponent.java
+++ b/utils/misc/src/main/java/org/onlab/metrics/MetricsComponent.java
@@ -35,7 +35,7 @@
      *
      * @param newName name of the component
      */
-    MetricsComponent(final String newName) {
+    public MetricsComponent(final String newName) {
         name = newName;
     }