using latest voltha-ci-tool container to correctly generate coverage reports

Change-Id: Iad2b8f9e0fe15e43107f8ca4f9d8131d3f4b1804
diff --git a/VERSION b/VERSION
index 4d54dad..3704213 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.0.2
+4.0.3-dev