VOL-2258 return to dev version

Change-Id: I98a1c2790e454d000e1dd6676ab3c9e04934b4c8
diff --git a/VERSION b/VERSION
index b1b25a5..7dd050c 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.2.2
+2.2.3-dev