ONOS-2315 adding auto-complete to the CLI

Change-Id: I7b3056022188d58ca141bfec2870c7f1b44e37c2
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 b27c649..6c9314a 100644
--- a/utils/misc/src/main/java/org/onlab/metrics/MetricsManager.java
+++ b/utils/misc/src/main/java/org/onlab/metrics/MetricsManager.java
@@ -290,4 +290,15 @@
     public void removeMatching(final MetricFilter filter) {
         metricsRegistry.removeMatching(filter);
     }
+
+    /**
+     * Fetches the existing Meters.
+     *
+     *
+     * @return a map of all metrics with the key as the
+     *         name String to the Meter.
+     */
+    public Map<String, Metric> getMetrics() {
+        return metricsRegistry.getMetrics();
+    }
 }