test_platform: Separate TEST_NA results from FAIL results

Currently TEST_NA (Not Applicable) tests show up as failures.  This
change adds another verdict so that TEST_NA can be treated as a no-op
instead.

BUG=chromium:1027745
TEST=./generate.sh

Change-Id: Idf2c7f3449a554f1d0e864a8fba270f23f2a389a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2186549
Reviewed-by: Alex Zamorzaev <zamorzaev@chromium.org>
Tested-by: G Tong <gatong@chromium.org>
Commit-Queue: G Tong <gatong@chromium.org>
Commit-Queue: Alex Zamorzaev <zamorzaev@chromium.org>
2 files changed