CORD-2964 Implement new openstack models and steps

Change-Id: I32ac438e799f563b721e19ad7ebc8a033796c88e
diff --git a/xos/unittest.cfg b/xos/unittest.cfg
new file mode 100644
index 0000000..44c6ea4
--- /dev/null
+++ b/xos/unittest.cfg
@@ -0,0 +1,6 @@
+[unittest]
+plugins=nose2-plugins.exclude
+code-directories=synchronizer
+                 model_policies
+                 steps
+                 pull_steps