Hello,

I changed the format of the tables a long time ago so that they could be parsed in standard Linux tools such as AWK.
https://github.com/apache/airflow/pull/8409
For example, to list the files that contain the DAG, I could run the command below.
```
airflow dags list | grep -v "dag_id" | awk '{print $2}' | sort | uniq
```
To pause all dags:
```bash
airflow dags list | awk '{print $1}' | grep -v "dag_id"| xargs airflow dags pause
```
Unfortunately [that has changed](https://github.com/apache/airflow/pull/12704) and we now have more fancy tables, but harder to use in standard Linux tools.

Alternatively, we can use JSON output, but I don't always have JQ installed on production environment, so performing administrative tasks is difficult for me.
```bash
$  docker run apache/airflow:2.0.1 bash -c "jq"

/bin/bash: jq: command not found
```

Best regards,
Kamil Breguła

CC: @turbaszek 
airflow/cli/cli_parser.py
ARG_FLOWER_URL_PREFIX = Arg(
    ("-u", "--url-prefix"), default=conf.get('celery', 'FLOWER_URL_PREFIX'), help="URL prefix for Flower"
)
ARG_FLOWER_BASIC_AUTH = Arg(
    ("-A", "--basic-auth"),
    default=conf.get('celery', 'FLOWER_BASIC_AUTH'),
    help=(
        "Securing Flower with Basic Authentication. "
        "Accepts user:password pairs separated by a comma. "
        "Example: flower_basic_auth = user1:password1,user2:password2"
    ),
)
ARG_TASK_PARAMS = Arg(("-t", "--task-params"), help="Sends a JSON params dict to the task")
ARG_POST_MORTEM = Arg(
    ("-m", "--post-mortem"), action="store_true", help="Open debugger on uncaught exception"
)
ARG_ENV_VARS = Arg(
    ("--env-vars",),
    help="Set env var in both parsing time and runtime for each of entry supplied in a JSON dict",
    type=json.loads,
)
ARG_CONN_ID = Arg(('conn_id',), help='Connection id, required to get/add/delete a connection', type=str)
ARG_CONN_ID_FILTER = Arg(
    ('--conn-id',), help='If passed, only items with the specified connection ID will be displayed', type=str
)
ARG_CONN_URI = Arg(
    ('--conn-uri',), help='Connection URI, required to add a connection without conn_type', type=str
)
ARG_CONN_TYPE = Arg(
    ('--conn-type',), help='Connection type, required to add a connection without conn_uri', type=str