title: Removing Airflow task logs
body: <p>I'm running 5 DAG's which have generated a total of about 6GB of log data in the <code>base_log_folder</code> over a months period. I just added a <code>remote_base_log_folder</code> but it seems it does not exclude logging to the <code>base_log_folder</code>.</p>
  
  <p>Is there anyway to automatically remove old log files, rotate them or force airflow to not log on disk (base_log_folder) only in remote storage?</p>