We need deterministic test results order.

--- subunit-1.4.4/python/subunit/tests/test_output_filter.py.orig
+++ subunit-1.4.4/python/subunit/tests/test_output_filter.py
@@ -49,7 +49,7 @@
 class TestStatusArgParserTests(TestCase):
 
     scenarios = [
-        (cmd, dict(command=cmd, option='--' + cmd)) for cmd in _ALL_ACTIONS
+        (cmd, dict(command=cmd, option='--' + cmd)) for cmd in sorted(_ALL_ACTIONS)
     ]
 
     def test_can_parse_all_commands_with_test_id(self):
@@ -194,7 +194,7 @@
 class StatusStreamResultTests(TestCase):
 
     scenarios = [
-        (s, dict(status=s, option='--' + s)) for s in _ALL_ACTIONS
+        (s, dict(status=s, option='--' + s)) for s in sorted(_ALL_ACTIONS)
     ]
 
     _dummy_timestamp = datetime.datetime(2013, 1, 1, 0, 0, 0, 0, UTC)