Minor cleanup in the Metrics module:
 * Add missing Javadoc
 * Line formatting

No functional changes.
diff --git a/utils/misc/src/main/java/org/onlab/metrics/MetricsFeature.java b/utils/misc/src/main/java/org/onlab/metrics/MetricsFeature.java
index 75c1018..204f562 100644
--- a/utils/misc/src/main/java/org/onlab/metrics/MetricsFeature.java
+++ b/utils/misc/src/main/java/org/onlab/metrics/MetricsFeature.java
@@ -15,6 +15,11 @@
         name = newName;
     }
 
+    /**
+     * Fetches the name of the Feature.
+     *
+     * @return name of the Feature
+     */
     public String getName() {
         return name;
     }