

**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
("--imgcat-dagrun",),
    help=(
        "After completing the dag run, prints a diagram on the screen for the "
        "current DAG Run using the imgcat tool.\n"
    ),
    action='store_true',
)
ARG_SAVE_DAGRUN = Arg(
    ("--save-dagrun",),
    help="After completing the backfill, saves the diagram for current DAG Run to the indicated file.\n\n",
)
ARG_TREE = Arg(("-t", "--tree"), help="Tree view", action="store_true")
ARG_SHUT_DOWN_LOGGING = Arg(
    ("--no-shut-down-logging",),
    help=argparse.SUPPRESS,
    dest="shut_down_logging",
    action="store_false",
    default=True,
)
ARG_UPSTREAM = Arg(("-u", "--upstream"), help="Include upstream tasks", action="store_true")
ARG_ONLY_FAILED = Arg(("-f", "--only-failed"), help="Only failed jobs", action="store_true")
ARG_ONLY_RUNNING = Arg(("-r", "--only-running"), help="Only running jobs", action="store_true")
ARG_DOWNSTREAM = Arg(("-d", "--downstream"), help="Include downstream tasks", action="store_true")
ARG_EXCLUDE_SUBDAGS = Arg(("-x", "--exclude-subdags"), help="Exclude subdags", action="store_true")
ARG_EXCLUDE_PARENTDAG = Arg(
    ("-X", "--exclude-parentdag"),
    help="Exclude ParentDAGS if the task cleared is a part of a SubDAG",
    action="store_true",
)
ARG_DAG_REGEX = Arg(