Add a new utility for running the bvt: `cros_run_bvt`

This provides a simple command line interface for using `test_that` to
run the BVT.  The intent is to spare developers from some of the
command-line complexity of selecting the best set of suites for running
tests.

BUG=None
TEST=run the script

Change-Id: Ia3cc7056e20baf180291c8830d4bfc82d757eeab
Reviewed-on: https://chromium-review.googlesource.com/209989
Tested-by: Richard Barnette <jrbarnette@chromium.org>
Reviewed-by: Fang Deng <fdeng@chromium.org>
Reviewed-by: Bernie Thompson <bhthompson@chromium.org>
Commit-Queue: Richard Barnette <jrbarnette@chromium.org>
2 files changed