Starting version 2.0.0-dev

Change-Id: I138e961e0e128847aec2cac00412f339b7a19638
diff --git a/voltha/VERSION b/voltha/VERSION
index 88c5fb8..d72f262 100644
--- a/voltha/VERSION
+++ b/voltha/VERSION
@@ -1 +1 @@
-1.4.0
+2.0.0-dev