Relaxed some query ordering assertions in various tests.

It accounts for differences seen on MySQL with MyISAM storage engine.

tests/model_fields/test_durationfield.py

@@ -44,7 +44,7 @@ class TestQuerying(TestCase):
         )
 
     def test_gt(self):
-        self.assertSequenceEqual(
+        self.assertCountEqual(
             DurationModel.objects.filter(field__gt=datetime.timedelta(days=0)),
             [self.objs[0], self.objs[1]],
         )