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

Change-Id: I849b307330a6fd5a5de5489d8f2db804a02acead
diff --git a/.gitignore b/.gitignore
index 0f03cd1..0d57996 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,7 @@
 .idea
-*.pyc
-
+.tox
 .coverage
-htmlcov
 coverage.xml
-nose2-junit.xml
-
+nose2-results.xml
+venv-service
+*.pyc