Add (useful) missing headlines to nvp unit test files

For Aaron Rosen's amusement, even though slightly ashamed.

Change-Id: Idadb7a86dddb2523987852179ebe23f6272846fb

neutron/tests/unit/nicira/test_agent_scheduler.py

@@ -1,3 +1,5 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
 # Copyright (c) 2013 OpenStack Foundation
 # All Rights Reserved.
 #

neutron/tests/unit/nicira/test_edge_router.py

@@ -1,3 +1,5 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
 # Copyright (c) 2013 OpenStack Foundation.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

neutron/tests/unit/nicira/test_networkgw.py

@@ -1,4 +1,5 @@
-#
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
 # Copyright 2012 Nicira Networks, Inc.  All rights reserved.
 #
 #    Licensed under the Apache License, Version 2.0 (the "License"); you may

neutron/tests/unit/nicira/test_nicira_plugin.py

@@ -1,3 +1,5 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
 # Copyright (c) 2012 OpenStack Foundation.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

neutron/tests/unit/nicira/test_nvp_api_request_eventlet.py

@@ -1,3 +1,5 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
 # Copyright (C) 2009-2012 Nicira Networks, Inc. All Rights Reserved.
 #
 #    Licensed under the Apache License, Version 2.0 (the "License"); you may

neutron/tests/unit/nicira/test_nvplib.py

@@ -1,3 +1,5 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
 # Copyright (c) 2013 OpenStack Foundation.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

neutron/tests/unit/nicira/test_nvpopts.py

@@ -1,3 +1,5 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
 # Copyright 2013 Nicira Networks, Inc.
 #
 #    Licensed under the Apache License, Version 2.0 (the "License"); you may