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/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml b/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
index 30bee25..7f55975 100644
--- a/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
+++ b/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
@@ -19,6 +19,11 @@
         <command>
             <action class="org.onlab.onos.cli.SummaryCommand"/>
         </command>
+
+        <command>
+            <action class="org.onlab.onos.cli.MetricsListCommand"/>
+        </command>
+
         <command>
             <action class="org.onlab.onos.cli.TabletMemberCommand"/>
         </command>