buildkite: move remaining things into meta.ci

#176
Opened by sterni at 2022-02-03T18·44+00

meta.targets should be meta.ci.targets, really.

  1. Done in cl/5238, though there is some cleanup left to do later.

    tazjin at 2022-02-07T15·15+00

  2. Done in depot, we'll keep compat around for a bit until external users are migrated.

    tazjin at 2022-02-08T15·35+00

  3. tazjin closed this issue at 2022-02-08T15·35+00