Initialise openstack.Manager() with config from self.nova.
diff --git a/kong/tests/test_servers.py b/kong/tests/test_servers.py
index f98ab0a..fa2eae6 100644
--- a/kong/tests/test_servers.py
+++ b/kong/tests/test_servers.py
@@ -14,7 +14,7 @@
     @classmethod
     def setUpClass(self):
         super(ServersTest, self).setUp()
-        self.os = openstack.Manager()
+        self.os = openstack.Manager(self.nova)
         self.image_ref = self.os.config.env.image_ref
         self.flavor_ref = self.os.config.env.flavor_ref
         self.ssh_timeout = self.os.config.nova.ssh_timeout