- The method create_notification returns an uuid string, if it isn't
mocked the 'notification's id' will be:
<MagicMock name='NotificationsRepository().create_notification()'
which can't be dump to json later.
- Bump Mako to 1.0.7 in lower-constraints.txt
- Bump decorator to 4.1.0 in lower-constraints.txt
Change-Id: I1ba563fd3144241127efe1cedf8853603dcca008
(cherry picked from commit 73e942cc2e)