**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
help='Export all variables',
        func=lazy_load_command('airflow.cli.commands.variable_command.variables_export'),
        args=(ARG_VAR_EXPORT,),
    ),
)
DB_COMMANDS = (
    ActionCommand(
        name='init',
        help="Initialize the metadata database",
        func=lazy_load_command('airflow.cli.commands.db_command.initdb'),
        args=(),
    ),
    ActionCommand(
        name="check-migrations",
        help="Check if migration have finished",
        description="Check if migration have finished (or continually check until timeout)",
        func=lazy_load_command('airflow.cli.commands.db_command.check_migrations'),
        args=(ARG_MIGRATION_TIMEOUT,),
    ),
    ActionCommand(
        name='reset',
        help="Burn down and rebuild the metadata database",
        func=lazy_load_command('airflow.cli.commands.db_command.resetdb'),
        args=(ARG_YES,),
    ),
    ActionCommand(
        name='upgrade',
        help="Upgrade the metadata database to latest version",
        func=lazy_load_command('airflow.cli.commands.db_command.upgradedb'),
        args=(),