Add redis auth credentials to celery backend config.

inventory_provider/tasks/config.py

@@ -22,12 +22,14 @@ with open(os.environ['INVENTORY_PROVIDER_CONFIG_FILENAME']) as f:
 if 'sentinel' in inventory_provider_config:
     params = inventory_provider_config['sentinel']
     _broker_scheme = 'sentinel'
+    _broker_password = params.get('password')
     broker_transport_options['master_name'] = params['name']
     sentinel_socket_timeout = params.get(
         'sentinel_socket_timeout', DEFAULT_SENTINEL_SOCKET_TIMEOUT)
 else:
     params = inventory_provider_config['redis']
     _broker_scheme = 'redis'
+    _broker_password = params.get('password')
 
 redis_socket_timeout = params.get(
     'redis_socket_timeout', DEFAULT_REDIS_SOCKET_TIMEOUT)
@@ -41,8 +43,12 @@ if ':' in _broker_hostname:
     # assume this means hostname is an ipv6 address
     _broker_hostname = f'[{_broker_hostname}]'
 
-broker_url = result_backend = (f'{_broker_scheme}://{_broker_hostname}'
-                               f':{_broker_port}/{_broker_db_index}')
+broker_url = result_backend = (
+    f'{_broker_scheme}://'
+    f'{"" if not _broker_password else f":{_broker_password}@"}'
+    f'{_broker_hostname}:{_broker_port}/{_broker_db_index}'
+)
+
 logger.debug('broker_url: %r' % broker_url)
 
 task_eager_propagates = True