[autotest] Validate --board and --build with test_that :lab:.
A board and build are both required with `test_that :lab:`.
This adds a check to enforce that with a useful error message.
BUG=chromium:418379
TEST=run test_that using all combinations of --board and --build
Change-Id: I9f39fd751482db836c186d5a2024521d73c8e9a7
Reviewed-on: https://chromium-review.googlesource.com/316513
Commit-Ready: Richard Barnette <jrbarnette@chromium.org>
Tested-by: Richard Barnette <jrbarnette@chromium.org>
Reviewed-by: Fang Deng <fdeng@chromium.org>
Reviewed-by: Aviv Keshet <akeshet@chromium.org>
1 file changed