Revert "chromeos_config: Remove cheets builders from build groups"

This reverts commit 01aa86a55fb3ae0c3a820fb5959bb492ce7ba65f.

BUG=b:25822327
TEST=none (revert, only needs test line because done manually)

Change-Id: Ife23db4fe2a729d727725182e7841057d95c3047
Reviewed-on: https://chromium-review.googlesource.com/314890
Commit-Ready: Elijah Taylor <elijahtaylor@chromium.org>
Tested-by: Elijah Taylor <elijahtaylor@chromium.org>
Reviewed-by: Elijah Taylor <elijahtaylor@chromium.org>
2 files changed