Performance Metrics service and manager added
diff --git a/utils/misc/src/main/java/org/onlab/metrics/package-info.java b/utils/misc/src/main/java/org/onlab/metrics/package-info.java
new file mode 100644
index 0000000..48151d4
--- /dev/null
+++ b/utils/misc/src/main/java/org/onlab/metrics/package-info.java
@@ -0,0 +1,4 @@
+/**
+ * Misc utils for various performance metrics.
+ */
+package org.onlab.metrics;