VOL-2828 Bump post-2.3 release

Change-Id: I76a442e866da256dd52173fc213f121887fa9d01
diff --git a/VERSION b/VERSION
index 4d54dad..3a95dc7 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.0.2
+4.1.0-dev0