[VOL-3001] Separating flows, groups and meters from LogicalDevice.
- This is to improve the performance of flow addition to system.
- This patch does not include separation of the flows from Device. It will be implemented in another patch.
- Flows, groups and meters are kept in store by their unique ids per logical device, and cached into a map with these unique ids per logical device again.
  Accessing to this store and map is synchronized by a RWLock.
  Also a lock is kept in memory per flow, meter and group to synchronize the modifications (add/modify/delete requests) per flow/meter/group.
Change-Id: Ic0135faef0bbd1664693375fa6527e0242919e6d
diff --git a/VERSION b/VERSION
index d47c6fe..ad8f890 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.4.2-dev0
+2.4.2-dev