Bump minor version post 2.4 release tag

Change-Id: Ib893e081f383d488844fc904c281d85afd742aa4
diff --git a/VERSION b/VERSION
index b0f6bf0..69fa968 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.4.10
+2.5.0-dev