metrics command to dump all the Metric in the system.

- Add probe to measure the time spent querying for Mastership.

Change-Id: I48fe37568a3261ee5b6229a3884e42a3a741b407
diff --git a/utils/misc/src/main/java/org/onlab/metrics/MetricsManager.java b/utils/misc/src/main/java/org/onlab/metrics/MetricsManager.java
index 5fe22f7..b27c649 100644
--- a/utils/misc/src/main/java/org/onlab/metrics/MetricsManager.java
+++ b/utils/misc/src/main/java/org/onlab/metrics/MetricsManager.java
@@ -154,7 +154,7 @@
      * Creates a Timer metric.
      *
      * @param component component the Timer is defined in
-     * @param feature feature the Timeer is defined in
+     * @param feature feature the Timer is defined in
      * @param metricName local name of the metric
      * @return the created Timer Metric
      */