Sync GitHub Servo organization groups with saltfs reviewers?

[larsbergstrom]

Right now, the GitHub Servo org has a somewhat ad-hoc list of groups and group membership that is overlapping but not entirely in sync with the saltfs reviewers.

In particular, we have an admins group from "the old days" when admins existed plus a developers group which has now-interchangeable permissions, but was separate because admins used to be owners back in the day.

There are also owners, but only a few of those, and it's a separate "bit" from group membership.

Finally, there's the servo:cargo-publish group, which should possibly be the same as these others?

cc @edunham @metajack

[larsbergstrom]

Due to limitation of the github permissions model (especially labeling, etc.) this is not feasible at this time.