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

Change-Id: I849b307330a6fd5a5de5489d8f2db804a02acead
diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..b8f06bb
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,2 @@
+.tox
+venv-service