bring in upstream celery settings into tests

tests/celery.py

@@ -12,6 +12,19 @@
 # Using a string here means the worker don't have to serialize
 # 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
+    'queue_order_strategy': 'priority',  # setup que to use prio sorting
+}
+app.conf.task_default_priority = 5  # anything called with the task.delay() will be given normal priority (5)
+app.conf.worker_prefetch_multiplier = 1  # only prefetch single tasks at a time on the workers so that prio tasks happen
+
 app.conf.ONCE = {
     'backend': 'allianceauth.services.tasks.DjangoBackend',
     'settings': {}