[CORD-3108] Adding tests for vRouter synchronizer

Change-Id: I894342d90a1b52aa58f0f68ee89b8ee4e5986d8e
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