Fix interaction with VOLT service

With Voltha 2.x we expect that onu_device value in RCord is a combiation of
ONU serial number and UNI port.

Change-Id: I082d4539400dfbb406bfce42a60293f9c1576a90
diff --git a/VERSION b/VERSION
index 31e5c84..40b6307 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.3.3
+1.4.0-dev
\ No newline at end of file