title: apache airflow define data for all scripts in DAG folder
body: <p>I have data like Amazon S3 connection settings etc.. which is relevant for many of the .py files in my DAG folder.</p>
  
  <p>I'm aware that <code>default_args</code> is shared with all DAGS in a specific .py file
  My question is how can I define data which will be accessible for <strong>ALL</strong> .py files on my DAG folder?</p>
  
  <p>Imagine that I need to change my S3 connection details... I don't want to go over all files and change it one by one. I want to change it just in one place.</p>
  
  <p>Does Airflow support this?</p>