newer celery requires newer redis-py

inventory_provider/tasks/config.py

 import json
 from os import getenv
 
+import logging
+
+logger = logging.getLogger(__name__)
+
 broker_url = getenv(
     'CELERY_BROKER_URL',
     default='redis://test-dashboard02.geant.org:6379/1')
-result_backend = getenv(
-    'CELERY_BROKER_URL',
-    default='redis://test-dashboard02.geant.org:6379/1')
+
+result_backend = broker_url
+if result_backend:
+    # bugfix workaround
+    result_backend = result_backend.split(';')[0]
 
 tmp_options = getenv(
     'BROKER_TRANSPORT_OPTIONS',

requirements.txt

@@ -4,8 +4,8 @@ pysnmp
 jsonschema
 paramiko
 flask
-redis
-celery
+redis==3.2.1
+celery==4.3.0
 junos-eznc
 lxml
 requests