

**Description**

We are using a 3rd party executor which has the ability to use multiple queues, however the `default_queue` is defined under the `celery` heading and is used regardless of the executor that you are using.

See: https://github.com/apache/airflow/blob/2.0.1/airflow/models/baseoperator.py#L366

It would be nice to decouple the default_queue configuration argument away from the celery section to allow other executors to utilise this functionality with less confusion.

**Are you willing to submit a PR?**

Yep! Will open a pull request shortly


**Related Issues**

Not that I'm aware of.

airflow/cli/cli_parser.py
"airflow connections export - --format yaml\n"
            "The --format parameter can also be used for the files, for example:\n"
            "airflow connections export /tmp/connections --format json\n"
        ),
        func=lazy_load_command('airflow.cli.commands.connection_command.connections_export'),
        args=(
            ARG_CONN_EXPORT,
            ARG_CONN_EXPORT_FORMAT,
        ),
    ),
)
PROVIDERS_COMMANDS = (
    ActionCommand(
        name='list',
        help='List installed providers',
        func=lazy_load_command('airflow.cli.commands.provider_command.providers_list'),
        args=(ARG_OUTPUT, ARG_VERBOSE),
    ),
    ActionCommand(
        name='get',
        help='Get detailed information about a provider',
        func=lazy_load_command('airflow.cli.commands.provider_command.provider_get'),
        args=(ARG_OUTPUT, ARG_VERBOSE, ARG_FULL, ARG_COLOR, ARG_PROVIDER_NAME),
    ),
    ActionCommand(
        name='links',
        help='List extra links registered by the providers',
        func=lazy_load_command('airflow.cli.commands.provider_command.extra_links_list'),
        args=(ARG_OUTPUT, ARG_VERBOSE),
    ),