GrigoriyMikhalkin

@juanfont Refactored aux functions to return errors.

@kradalby Thanks! I didn't find a way to do that for Ansible. So it should be possible there to generate API key and pass it later to another role somehow?

Another, probably better, idea is to introduce new command: `headscale apikeys save --prefix --password --expiration`. That would be more flexible.

@juanfont I'm trying to implement VPN connection for machines provided by [metal-stack](https://github.com/metal-stack/)(which is MaaS platform basically). Headscale is deployed to serve as a control-plane. And then we have `metal-api` service,...

@juanfont Yep, sure!

@stealthybox IMO, it's a little bit complex(i.e. needs memorization). I usually use `docker image prune -a` command, as you mentioned. If it's ok, i would like to work on adding...

Problem still exists in `raven 6.9.0`

I'm currently looking into this