**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
ARG_LOG_FILE,
        ),
        epilog=(
            'Signals:\n'
            '\n'
            '  - SIGUSR2: Dump a snapshot of task state being tracked by the executor.\n'
            '\n'
            '    Example:\n'
            '        pkill -f -USR2 "airflow scheduler"'
        ),
    ),
    ActionCommand(
        name='version',
        help="Show the version",
        func=lazy_load_command('airflow.cli.commands.version_command.version'),
        args=(),
    ),
    ActionCommand(
        name='cheat-sheet',
        help="Display cheat sheet",
        func=lazy_load_command('airflow.cli.commands.cheat_sheet_command.cheat_sheet'),
        args=(ARG_VERBOSE,),
    ),
    GroupCommand(
        name='connections',
        help="Manage connections",
        subcommands=CONNECTIONS_COMMANDS,
    ),
    GroupCommand(
        name='providers',