add channels to reqs and defaults

awx/settings/local_settings.py.docker_compose

@@ -84,6 +84,12 @@ BROKER_URL = "amqp://{}:{}@{}/{}".format(os.environ.get("RABBITMQ_USER"),
                                          os.environ.get("RABBITMQ_HOST"),
                                          os.environ.get("RABBITMQ_VHOST"))
 
+CHANNEL_LAYERS = {
+    'default': {'BACKEND': 'asgi_amqp.AMQPChannelLayer',
+                'ROUTING': 'awx.main.routing.channel_routing',
+                'CONFIG': {'url': BROKER_URL}}
+}
+
 # Mongo host configuration
 MONGO_HOST = NotImplemented