[VOL-3717] Integrate ADTRAN OLT in berlin

Change-Id: I61e04e11a9916b25b9552ee96a42cfc147f032b1
diff --git a/VERSION b/VERSION
index 6a6a3d8..745ec0d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.6.1
+2.6.2-dev