TT#96400 celery: restore celery log

* structlog doesn't have task name

> celery[15524]: Received task: repoapi.tasks.get_jbi_files[9706dfaa-75ee-4553-8c3b-1de752c4b1bb]

Change-Id: I224a2a7b6ef5a2e8ae37f50ddb9f2b4424f81324

repoapi/celery.py

@@ -58,6 +58,10 @@ def receiver_setup_logging(loglevel, logfile, format, colorize, **kwargs):
                     "handlers": ["console"],
                     "level": "INFO",
                 },
+                "celery": {
+                    "handlers": ["console"],
+                    "level": "INFO",
+                },
                 "repoapi": {
                     "handlers": ["console"],
                     "level": os.getenv("DJANGO_LOG_LEVEL", "INFO"),