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
conf.deprecated_options = {
            ('celery', 'worker_concurrency'): ('celery', 'celeryd_concurrency', '2.0.0'),
        }
        
        conf.remove_option('celery', 'worker_concurrency')
        with pytest.warns(DeprecationWarning):
            with mock.patch.dict('os.environ', AIRFLOW__CELERY__CELERYD_CONCURRENCY="99"):
                assert conf.getint('celery', 'worker_concurrency') == 99
        with pytest.warns(DeprecationWarning), conf_vars({('celery', 'celeryd_concurrency'): '99'}):
            assert conf.getint('celery', 'worker_concurrency') == 99
    @conf_vars(
        {
            ('logging', 'logging_level'): None,
            ('core', 'logging_level'): None,
        }
    )
    def test_deprecated_options_with_new_section(self):