VOL-4274 Move platform.go file to voltha-lib-go

Change-Id: I81b6f4e000e48aa634c45d173513db92a02f8e50
diff --git a/VERSION b/VERSION
index fcdb2e1..ad6abd3 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.0.0
+4.0.1-dev