[AIRFLOW-XXX] Add information about user list (#5341)
[AIRFLOW-XXX] Add information about user list (#5341)


(cherry picked from commit 03446ddb114c904035f2a1b886a985281dea48d9)

owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow,owlabs/incubator-airflow