SEBA-497 delayering, Makefile, and tox for onos-synchronizer

Change-Id: I849b307330a6fd5a5de5489d8f2db804a02acead
diff --git a/VERSION b/VERSION
index 82bd22f..7ec1d6d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.0.13
+2.1.0