bring test celery in line with project

tests/celery.py

@@ -1,4 +1,5 @@
 import os
+
 from celery import Celery
 
 # set the default Django settings module for the 'celery' program.
@@ -12,6 +13,10 @@ app = Celery('devauth')
 # the configuration object to child processes.
 app.config_from_object('django.conf:settings')
 
+# Automatically try to establish the connection to the AMQP broker on
+# Celery startup if it is unavailable.
+app.conf.broker_connection_retry_on_startup = True
+
 # setup priorities ( 0 Highest, 9 Lowest )
 app.conf.broker_transport_options = {
     'priority_steps': list(range(10)),  # setup que to have 10 steps