Extract lab and test platform API for test planning

BUG=chromium:1069063
TEST=./generate.sh

Change-Id: Ia9acc83eff8852bc51c616516999033e5cd0f787
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2142326
Commit-Queue: Prathmesh Prabhu <pprabhu@chromium.org>
Tested-by: Prathmesh Prabhu <pprabhu@chromium.org>
Reviewed-by: Alex Zamorzaev <zamorzaev@chromium.org>
2 files changed