re-add testdag

dags/testdag.py

@@ -0,0 +1,21 @@
+from datetime import timedelta
+
+from airflow import DAG
+from airflow.operators.bash import BashOperator
+from airflow.utils.dates import days_ago
+
+def_args = {
+    'owner': 'airflow',
+    'depends_on_past': False,
+    'email_on_failure': False,
+    'email_on_retry': False,
+    'retries': 1,
+    'retry_delay': timedelta(minutes=5)
+
+}
+
+with DAG('testdag', default_args=def_args, description='simple testing dag', schedule_interval=timedelta(days=1), start_date=days_ago(2)) as dag:
+    t1 = BashOperator(task_id='print_date', bash_command='date')
+    t2 = BashOperator(task_id='do_noting', bash_command='sleep 5')
+
+    t1 >> t2