Fix call to ignore_not_found() in SwiftSignal

The call to ignore_not_found() in the SwiftSignal resource was missing
an argument.

Change-Id: Id65af72ed30e76ab3620248807ef05c31e1e8565
Closes-Bug: 1452412

heat/engine/resources/openstack/heat/swiftsignal.py

@@ -251,7 +251,7 @@ class SwiftSignal(resource.Resource):
             try:
                 signal = self.client().get_object(self.stack.id, obj['name'])
             except Exception as exc:
-                self.client_plugin().ignore_not_found()
+                self.client_plugin().ignore_not_found(exc)
                 continue
 
             body = signal[1]

heat/tests/test_swiftsignal.py

@@ -851,3 +851,27 @@ class SwiftSignalTest(common.HeatTestCase):
         self.assertEqual(('CREATE', 'COMPLETE'), st.state)
         wc = st['test_wait_condition']
         self.assertEqual("null", wc.FnGetAtt('data'))
+
+    @mock.patch.object(swift.SwiftClientPlugin, '_create')
+    @mock.patch.object(resource.Resource, 'physical_resource_name')
+    def test_swift_get_object_404(self, mock_name, mock_swift):
+        st = create_stack(swiftsignal_template)
+        handle = st['test_wait_condition_handle']
+
+        mock_swift_object = mock.Mock()
+        mock_swift.return_value = mock_swift_object
+        mock_swift_object.url = "http://fake-host.com:8080/v1/AUTH_1234"
+        mock_swift_object.head_account.return_value = {
+            'x-account-meta-temp-url-key': '123456'
+        }
+        obj_name = "%s-%s-abcdefghijkl" % (st.name, handle.name)
+        mock_name.return_value = obj_name
+        mock_swift_object.get_container.return_value = cont_index(obj_name, 2)
+        mock_swift_object.get_object.side_effect = (
+            (obj_header, ''),
+            swiftclient_client.ClientException(
+                "Object %s not found" % obj_name, http_status=404)
+        )
+
+        st.create()
+        self.assertEqual(('CREATE', 'COMPLETE'), st.state)