functional stats service

Change-Id: I90de3aa5d7721db8ef6a154e122af8b446243f60
diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/statistic/impl/package-info.java b/core/store/dist/src/main/java/org/onlab/onos/store/statistic/impl/package-info.java
new file mode 100644
index 0000000..122d2be
--- /dev/null
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/statistic/impl/package-info.java
@@ -0,0 +1,4 @@
+/**
+ * Implementation of the statistic store.
+ */
+package org.onlab.onos.store.statistic.impl;
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