Add PublishCondition to ArtifactsByService.ArtifactInfo

Some artifacts should always be published.

BUG=chromium:1154822
TEST=generate

Change-Id: I40973de00e054aaf5ed296b89d63235bea75da25
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2570140
Reviewed-by: Alex Klein <saklein@chromium.org>
Commit-Queue: LaMont Jones <lamontjones@chromium.org>
2 files changed