Fix filter image snapshot type with glancev2

Change-Id: Iccfcc0b21f500a8c1de8b1efd1d565979f400e18

muranodashboard/images/forms.py

@@ -29,7 +29,7 @@ LOG = logging.getLogger(__name__)
 def filter_murano_images(images, request=None):
     # filter out the snapshot image type
     images = filter(
-        lambda x: x.properties.get("image_type", '') != 'snapshot', images)
+        lambda x: getattr(x, 'image_type', None) != 'snapshot', list(images))
     marked_images = []
     for image in images:
         # Additional properties, whose value is always a string data type, are

muranodashboard/tests/unit/images/test_forms.py

@@ -40,11 +40,10 @@ class TestImagesForms(testtools.TestCase):
         images = [self.mock_img]
         self.assertEqual(images, forms.filter_murano_images(images))
 
-        snapshot_meta = {'image_type': u'snapshot',
-                         'murano_image_info': '{"title": "title",\
-                                                "type": "type"}'}
-        mock_snapshot_img = \
-            mock.MagicMock(id=14, properties=snapshot_meta)
+        murano_meta = '{"title": "title", "type": "type"}'
+
+        mock_snapshot_img = mock.MagicMock(
+            id=14, murano_image_info=murano_meta, image_type='snapshot')
         images = [mock_snapshot_img]
         self.assertEqual([],
                          forms.filter_murano_images(images, self.mock_request))