Building voltha-onos off ONOS:2.2.2-rc6

Change-Id: I17de59a5a41da98fdc6d8e4ef2f2fb8c551bfe62
diff --git a/VERSION b/VERSION
index 7f59b18..66f5ffd 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.0.2-alpha2
+4.0.2-alpha3