Hello,

Our Helm Chart uses the command that is deleted in Airflow 2.0. We should consider what we want to do with it - add this command again or delete the reference to this command in the Helm Chart.
https://github.com/apache/airflow/blob/d41c6a46b176a80e1cdb0bcc592f5a8baec21c41/chart/templates/scheduler/scheduler-deployment.yaml#L177-L197
Related PR: 
https://github.com/apache/airflow/pull/6843

Best regards,
Kamil Breguła
CC: @dstandish 
airflow/cli/cli_parser.py
)
ARG_QUEUES = Arg(
    ("-q", "--queues"),
    help="Comma delimited list of queues to serve",
    default=conf.get('operators', 'DEFAULT_QUEUE'),
)
ARG_CONCURRENCY = Arg(
    ("-c", "--concurrency"),
    type=int,
    help="The number of worker processes",
    default=conf.get('celery', 'worker_concurrency'),
)
ARG_CELERY_HOSTNAME = Arg(
    ("-H", "--celery-hostname"),
    help="Set the hostname of celery worker if you have multiple workers on a single machine",
)
ARG_UMASK = Arg(
    ("-u", "--umask"),
    help="Set the umask of celery worker in daemon mode",
    default=conf.get('celery', 'worker_umask'),
)
ARG_WITHOUT_MINGLE = Arg(
    ("--without-mingle",),
    default=False,
    help="Don’t synchronize with other workers at start-up",
    action="store_true",
)
ARG_WITHOUT_GOSSIP = Arg(
    ("--without-gossip",),
    default=False,