old_contents: from app import celery
  from app import create_app
  
  app = create_app(config_override={'BDB_READONLY': True})
  celery
  
new_contents: from app import celery
  from app import create_app
  
  app = create_app(config_override={'HDB_READONLY': True})
  celery
  
subject: Update config variable name of HDB in celery worker