Fix up some checkstyle/PMD complaints in Metrics code

Change-Id: Ie62062fad71225d85f3d70142d3a72cbc3003b47
diff --git a/src/main/java/net/onrc/onos/core/metrics/web/MetricsWebRoutable.java b/src/main/java/net/onrc/onos/core/metrics/web/MetricsWebRoutable.java
index d79e659..3a3f493 100644
--- a/src/main/java/net/onrc/onos/core/metrics/web/MetricsWebRoutable.java
+++ b/src/main/java/net/onrc/onos/core/metrics/web/MetricsWebRoutable.java
@@ -11,6 +11,9 @@
 public class MetricsWebRoutable implements RestletRoutable {
     /**
      * Creates the Restlet router and binds to the proper resources.
+     *
+     * @param context Context to use for the restlet
+     * @return the router for Metrics REST calls
      */
     @Override
     public Restlet getRestlet(Context context) {
@@ -22,7 +25,9 @@
 
 
     /**
-     * Sets the base path for the Metrics.
+     * Defines the base path for the Metrics.
+     *
+     * @return base path for Metrics REST APIs
      */
     @Override
     public String basePath() {