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

Change-Id: I916f4b632019dddceae5a6f024a0b1c64d8188d8
diff --git a/xos/synchronizer/event_steps/onos_event.py b/xos/synchronizer/event_steps/onos_event.py
index 8458516..27199f2 100644
--- a/xos/synchronizer/event_steps/onos_event.py
+++ b/xos/synchronizer/event_steps/onos_event.py
@@ -13,6 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import absolute_import
 
 import json
 from xossynchronizer.event_steps.eventstep import EventStep