Update MeB uwsgi.ini to match LB uwsgi.ini (#425)

LB's uwsgi.ini configuration is more robust and plays well with consul too.

docker/prod/uwsgi.ini

@@ -1,8 +1,17 @@
 [uwsgi]
+uid = www-data
+gid = www-data
 master = true
 socket = 0.0.0.0:13031
 module = metabrainz
 enable-threads = true
 callable = create_app()
-chdir = /code/
+chdir = /code/metabrainz
 processes = 20
+listen = 1024
+log-x-forwarded-for=true
+disable-logging = true
+; quit uwsgi if the python app fails to load
+need-app = true
+; when uwsgi gets a sighup, quit completely and let runit restart us
+exit-on-reload = true