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

Change-Id: I916f4b632019dddceae5a6f024a0b1c64d8188d8
diff --git a/xos/synchronizer/fabric-synchronizer.py b/xos/synchronizer/fabric-synchronizer.py
index 205bd4a..1c98ecd 100755
--- a/xos/synchronizer/fabric-synchronizer.py
+++ b/xos/synchronizer/fabric-synchronizer.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python
 
 # Copyright 2017-present Open Networking Foundation
 #
@@ -13,10 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
-#!/usr/bin/env python
-
-# This imports and runs ../../xos-observer.py
+from __future__ import absolute_import
 
 import os
 from xossynchronizer import Synchronizer