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
func=lazy_load_command('airflow.cli.commands.db_command.shell'),
        args=(),
    ),
    ActionCommand(
        name='check',
        help="Check if the database can be reached",
        func=lazy_load_command('airflow.cli.commands.db_command.check'),
        args=(),
    ),
)
CONNECTIONS_COMMANDS = (
    ActionCommand(
        name='get',
        help='Get a connection',
        func=lazy_load_command('airflow.cli.commands.connection_command.connections_get'),
        args=(ARG_CONN_ID, ARG_COLOR, ARG_OUTPUT, ARG_VERBOSE),
    ),
    ActionCommand(
        name='list',
        help='List connections',
        func=lazy_load_command('airflow.cli.commands.connection_command.connections_list'),
        args=(ARG_OUTPUT, ARG_VERBOSE, ARG_CONN_ID_FILTER),
    ),
    ActionCommand(
        name='add',
        help='Add a connection',
        func=lazy_load_command('airflow.cli.commands.connection_command.connections_add'),
        args=(ARG_CONN_ID, ARG_CONN_URI, ARG_CONN_EXTRA) + tuple(ALTERNATIVE_CONN_SPECS_ARGS),
    ),
    ActionCommand(