**Update**

We discussed and decide this CLI should always only clean up pods created by Airflow.

<hr>

### Description

Currently command `kubernetes cleanup-pods` cleans up Pods that meet specific conditions in a given namespace.

Underlying code: https://github.com/apache/airflow/blob/2.0.1/airflow/cli/commands/kubernetes_command.py#L70

### Use case / motivation

The problem to me is: users may have other non-Airflow stuff running in this specific namespace, and they may want to have different strategy/logic for Pod cleaning-up for these non-Airflow pods.

We may want to have an additional boolean flag for this command, like `--only-airflow-pods`, so that users can decide if they only want to clean up Airflow-created Pods.

It should not be hard to identify Airflow-created pods, given the specific labels Airflow adds to the Pods it creates (https://github.com/apache/airflow/blob/2.0.1/airflow/kubernetes/pod_generator.py#L385)




airflow/cli/cli_parser.py
(
        "-o",
        "--output",
    ),
    help="Output format. Allowed values: json, yaml, plain, table (default: table)",
    metavar="(table, json, yaml, plain)",
    choices=("table", "json", "yaml", "plain"),
    default="table",
)
ARG_COLOR = Arg(
    ('--color',),
    help="Do emit colored output (default: auto)",
    choices={ColorMode.ON, ColorMode.OFF, ColorMode.AUTO},
    default=ColorMode.AUTO,
)
ARG_DAG_ID_OPT = Arg(("-d", "--dag-id"), help="The id of the dag")
ARG_NO_BACKFILL = Arg(
    ("--no-backfill",), help="filter all the backfill dagruns given the dag id", action="store_true"
)
ARG_STATE = Arg(("--state",), help="Only list the dag runs corresponding to the state")
ARG_LIMIT = Arg(("--limit",), help="Return a limited number of records")
ARG_NUM_EXECUTIONS = Arg(
    ("-n", "--num-executions"),
    default=1,
    type=positive_int(allow_zero=False),
    help="The number of next execution datetimes to show",
)
ARG_MARK_SUCCESS = Arg(
    ("-m", "--mark-success"), help="Mark jobs as succeeded without running them", action="store_true"
)