VOL-3314: ONU discovered entry is not cleared in OLT adapter on ONU
startup failure event
Bump minor version post VOLTHA2.4 branch out

Change-Id: I8b0d14283baecec666af3c7f5d7ba8604f517773
diff --git a/VERSION b/VERSION
index 3f5987a..69fa968 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.4.9
+2.5.0-dev