https://airflow.apache.org/docs/apache-airflow/stable/configurations-ref.html#store-dag-code

![Captura de pantalla 2021-05-26 a las 17 47 56](https://user-images.githubusercontent.com/11339132/119691160-a2049a00-be4a-11eb-8f55-0ad2c6117620.png)

The Default is True or None?
tests/core/test_configuration.py
config = textwrap.dedent(
            """
            [core]
            dags_folder = {AIRFLOW_HOME}/dags
            sql_alchemy_conn = sqlite:///{AIRFLOW_HOME}/airflow.db
            parallelism = 32
            fernet_key = {FERNET_KEY}
        """
        )
        cfg = parameterized_config(config)
        
        assert "[core]" in cfg
        assert "dags_folder" in cfg
        assert "sql_alchemy_conn" in cfg
        assert "fernet_key" in cfg
        
        assert "{AIRFLOW_HOME}" not in cfg
        assert "{FERNET_KEY}" not in cfg
    def test_config_use_original_when_original_and_fallback_are_present(self):