cros_ca: Add support to record OS info in metric output file

BUG=b:5669013
TEST=cros local test: python bin/test_cros_remote.py --var=duration=2 <DUT> cuj.VideoPlaying

Change-Id: I7693b3e520c38cdfde2fa30ff92d5f2d7c02ad94
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/5672894
Reviewed-by: Xibin Liu <xibin@google.com>
Auto-Submit: Willis Kung <williskung@google.com>
Commit-Queue: Willis Kung <williskung@google.com>
Tested-by: Willis Kung <williskung@google.com>
1 file changed