Comment 6 for bug 1276945

> Including conf files would be excellent, yes.

Thanks.

To anyone wondering how this differs from snippets (hi, future me) there
are a few things to bear in mind:

* This will either remain undocumented or be documented with large
  warnings.

* By not providing UI or API to manipulate extra configuration we are
  signalling that this is not supported by MAAS.

* This is orders of magnitude less work.

Next we need to discuss this as a team. I doubt it'll be controversial,
but you never know. There is a risk that bugs introduced by misuse or
misconfiguration will ultimately reflect badly on MAAS and/or introduce
a support burden.