Do not rely on hash ordering in tests

With tox 1.7.2 hash randomization will be on by default, causing
random failures of our tests. How to reproduce:
* Update tox
* Run something like:
  $ for i in {1..20}; do tox -epy27 || break; done

Change-Id: I52c10c47a7a1c0e6a9e436efb090bbcb0fb02edc
Closes-bug: #1348818

ironic/tests/api/v1/test_drivers.py

@@ -51,7 +51,7 @@ class TestListDrivers(base.FunctionalTest):
         for i in range(len(expected)):
             d = drivers[i]
             self.assertEqual(expected[i]['name'], d['name'])
-            self.assertEqual(expected[i]['hosts'], d['hosts'])
+            self.assertEqual(sorted(expected[i]['hosts']), sorted(d['hosts']))
             self.validate_link(d['links'][0]['href'])
             self.validate_link(d['links'][1]['href'])
 

ironic/tests/objects/test_objects.py

@@ -429,7 +429,12 @@ class _TestObject(object):
                          'updated_at': timeutils.isotime(dt),
                         }
                     }
-        self.assertEqual(expected, obj.obj_to_primitive())
+        actual = obj.obj_to_primitive()
+        # ironic_object.changes is built from a set and order is undefined
+        self.assertEqual(sorted(expected['ironic_object.changes']),
+                         sorted(actual['ironic_object.changes']))
+        del expected['ironic_object.changes'], actual['ironic_object.changes']
+        self.assertEqual(expected, actual)
 
     def test_contains(self):
         obj = MyObj()

ironic/tests/test_glance_service.py

@@ -28,6 +28,7 @@ from ironic.common.glance_service import base_image_service
 from ironic.common.glance_service import service_utils
 from ironic.common import image_service as service
 from ironic.openstack.common import context
+from ironic.openstack.common import jsonutils
 from ironic.tests import base
 from ironic.tests import matchers
 from ironic.tests import stubs
@@ -66,19 +67,26 @@ class TestGlanceSerializer(testtools.TestCase):
             'name': 'image1',
             'is_public': True,
             'foo': 'bar',
-            'properties': {
-                'prop1': 'propvalue1',
-                'mappings':
-                '[{"device": "bbb", "virtual": "aaa"}, '
-                '{"device": "yyy", "virtual": "xxx"}]',
-                'block_device_mapping':
-                '[{"virtual_device": "fake", "device_name": "/dev/fake"}, '
-                '{"virtual_device": "ephemeral0", '
-                '"device_name": "/dev/fake0"}]'}}
+            'properties': {'prop1': 'propvalue1'}
+        }
         converted = service_utils._convert(metadata, 'to')
-        self.assertEqual(converted_expected, converted)
         self.assertEqual(metadata,
                          service_utils._convert(converted, 'from'))
+        # Fields that rely on dict ordering can't be compared as text
+        mappings = jsonutils.loads(converted['properties']
+                                   .pop('mappings'))
+        self.assertEqual([{"device": "bbb", "virtual": "aaa"},
+                          {"device": "yyy", "virtual": "xxx"}],
+                         mappings)
+        bd_mapping = jsonutils.loads(converted['properties']
+                                     .pop('block_device_mapping'))
+        self.assertEqual([{"virtual_device": "fake",
+                           "device_name": "/dev/fake"},
+                          {"virtual_device": "ephemeral0",
+                           "device_name": "/dev/fake0"}],
+                         bd_mapping)
+        # Compare the remaining
+        self.assertEqual(converted_expected, converted)
 
 
 class TestGlanceImageService(base.TestCase):