Right now, you can get a list of all servod commands and what they do by doing
dut-control -i.
There are instances when a group of servod commands belong together, and need to be identified programmatically.

The proposal is to add a tags='' param inside commands
tags is a comma separated list of tags under which this command can be found.

Subsequently, either:
- another argument inside client.py to display_config
- a servod cmd (collection) e.g.
$ dut-control tagged_cmds:power
$ tagged_cmds:pp3300_dsw_ec_mw,....
can be used to query the servod instance for commands that have that tag.

This is a tracker bug to discuss this feature, and track progress, and implementation.