The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/chromite/+/82738ac7f2faf7ef7110e0ca68a2404f674584c4

commit 82738ac7f2faf7ef7110e0ca68a2404f674584c4
Author: Yaakov Shaul <yshaul@google.com>
Date: Tue Nov 27 22:39:56 2018

cbuildbot: Add noop TestPlanStage to cbuildbot

This CL reroutes HW tests through a new (noop)
TestPlanStage.

BUG= chromium:902952 
TEST=unittest

Change-Id: I0f1df7229efb72c6df17a40c85dd490f3f26fcb8
Reviewed-on: https://chromium-review.googlesource.com/c/1330778
Reviewed-by: C Shapiro <shapiroc@chromium.org>
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Tested-by: Yaakov Shaul <yshaul@google.com>

[modify] https://crrev.com/82738ac7f2faf7ef7110e0ca68a2404f674584c4/cbuildbot/stages/test_stages_unittest.py
[modify] https://crrev.com/82738ac7f2faf7ef7110e0ca68a2404f674584c4/cbuildbot/stages/test_stages.py
[modify] https://crrev.com/82738ac7f2faf7ef7110e0ca68a2404f674584c4/cbuildbot/builders/simple_builders_unittest.py
[modify] https://crrev.com/82738ac7f2faf7ef7110e0ca68a2404f674584c4/cbuildbot/builders/simple_builders.py