TypeError: get_config() takes at least 2 arguments (1 given)

[jezdez]

https://sentry.prod.mozaws.net/operations/data-stmo-prod/issues/3477358/

TypeError: get_config() takes at least 2 arguments (1 given)
(5 additional frame(s) were not displayed)
...
  File "flask/app.py", line 1625, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "dockerflow/flask/app.py", line 304, in _heartbeat_view
    detail = self._heartbeat_check_detail(check)
  File "dockerflow/flask/app.py", line 282, in _heartbeat_check_detail
    errors = list(filter(lambda e: e.id not in self.silenced_checks, check()))
  File "dockerflow/flask/app.py", line 388, in decorated_function
    return func(*args, **kwargs)
  File "dockerflow/flask/checks/__init__.py", line 76, in check_migrations_applied
    config = migrate.get_config()

TypeError: get_config() takes at least 2 arguments (1 given)

[jezdez]

This fixed in python-dockerflow: mozilla-services/python-dockerflow@036927b

[jezdez]

Since our requirements file is installing the latest version of redash-stmo, which in turn installs python-dockerflow we'll need to do a minor bump for it to deploy on the next release.

[jezdez]

https://pypi.org/project/redash-stmo/2018.4.0/ released.

@robotblake does #360 suffice? It'd be picked up on the next deploy.