python3: sort dict for post_volumes_1234_action test

In Python 3, hash randomization is enabled by default. It causes the
iteration order of dicts and sets to be unpredictable and differ across
Python runs.

Sort the list and update the expecting result.

Change-Id: Iead7ca8f45b035abd78f0b25865b5f7e1b9f3294
Signed-off-by: Chuck Short <chuck.short@canonical.com>

cinderclient/tests/v1/fakes.py

@@ -316,7 +316,8 @@ class FakeHTTPClient(base_client.HTTPClient):
         assert len(list(body)) == 1
         action = list(body)[0]
         if action == 'os-attach':
-            assert list(body[action]) == ['instance_uuid', 'mountpoint']
+            assert sorted(list(body[action])) == ['instance_uuid',
+                                                  'mountpoint']
         elif action == 'os-detach':
             assert body[action] is None
         elif action == 'os-reserve':

cinderclient/tests/v2/fakes.py

@@ -323,7 +323,8 @@ class FakeHTTPClient(base_client.HTTPClient):
         assert len(list(body)) == 1
         action = list(body)[0]
         if action == 'os-attach':
-            assert list(body[action]) == ['instance_uuid', 'mountpoint']
+            assert sorted(list(body[action])) == ['instance_uuid',
+                                                  'mountpoint']
         elif action == 'os-detach':
             assert body[action] is None
         elif action == 'os-reserve':