bash_completion: Add support for test_that

BUG=none
TEST=test_that --<tab><tab>

Change-Id: I01f7c8b18f55b75785815aeb3fe0d1c27a38e059
Reviewed-on: https://chromium-review.googlesource.com/1896277
Tested-by: Craig Hesling <hesling@chromium.org>
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed