common.proto: add IMAGE_ZIP-related TODO

BUG=None
TEST=regen

Change-Id: I67dea98124094475f7a331165347dfd477691724
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2194324
Tested-by: Sean Abraham <seanabraham@chromium.org>
Auto-Submit: Sean Abraham <seanabraham@chromium.org>
Reviewed-by: LaMont Jones <lamontjones@chromium.org>
Commit-Queue: LaMont Jones <lamontjones@chromium.org>
1 file changed