[CORD-3100] Refactoring and documenting the ONOS Service

Change-Id: Ida83935798a2a99b538f6ccdc55cc26f3148ffe3
diff --git a/xos/unittest.cfg b/xos/unittest.cfg
new file mode 100644
index 0000000..48ea867
--- /dev/null
+++ b/xos/unittest.cfg
@@ -0,0 +1,4 @@
+[unittest]
+plugins=nose2-plugins.exclude
+code-directories=synchronizer
+                 steps