Set to only run tests which should pass

Other tests are collected in known_bad_tests.json in order to simplify the
switching-on process when the API has been changed to allow them to pass.

BUG=chromium:1051691
TEST=emerge and run_tests.sh, also preupload

Change-Id: I336bb29265510f8a0d4d13ffca70cffc87697781
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/tnull/+/2309151
Commit-Queue: Jacob Kopczynski <jkop@chromium.org>
Tested-by: Jacob Kopczynski <jkop@chromium.org>
Auto-Submit: Jacob Kopczynski <jkop@chromium.org>
Reviewed-by: Prathmesh Prabhu <pprabhu@chromium.org>
4 files changed