title: Airflow api to stop a dag run
body: <p>I want to control airflow DAG runs using my python code base. There is a start DAG api <code>POST /api/experimental/dags/&lt;DAG_ID&gt;/dag_runs</code></p>
  
  <p>But want to know if there is any stop DAG api which can just mark all the task failed/abort for that particular DAG</p>