Pass autostart attribute from gunicorn to supervisor.
Merge branch 'add_autostart' of https://github.com/depop/application_python into supervisor-autostart

* 'add_autostart' of https://github.com/depop/application_python:
  Pass autostart attribute from gunicorn to supervisor.
pass autostart attribute from celery to supervisord
Merge branch 'add_celery_autostart' into supervisor-autostart

* add_celery_autostart:
  pass autostart attribute from celery to supervisord