VOL-1643 Update voltha-lib-go to use voltha-protos v3.0.0

and bump up the version to 3.0.0. voltha-protos is modified to be
compatible with the java language proto compilation. It's a major
change and a major version change has been made.

Change-Id: Ifb93430567ddf96aaa0fbf6e5853aad9e1070f6f
diff --git a/VERSION b/VERSION
index 9945222..4a36342 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.2.28
+3.0.0