chromeos_config: add soraka to cheets boards

Mirrors https://chromium-review.googlesource.com/c/490522/ for
soraka, as we see the same issue (VMTests failing because of
tpm2).

Adds soraka to both _x86_internal_release_boards and _cheets_x86_boards,
then run:

bin/cros_show_waterfall_layout > cbuildbot/waterfall_layout_dump.txt
cbuildbot/chromeos_config_unittest --update

BUG=chromium:710492
BUG=b:38477401
TEST=cbuildbot/chromeos_config_unittest
TEST=cbuildbot/run_tests
TEST=cbuildbot --remote -g XXX soraka-release

Change-Id: I48a579d6a88ee97487a8ea7324cfb870c2477a9c
Reviewed-on: https://chromium-review.googlesource.com/509649
Reviewed-by: Nicolas Norvez <norvez@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Commit-Queue: Nicolas Boichat <drinkcat@chromium.org>
3 files changed