Disable platform_Powerwash on peppy.

After a powerwash test on a peppy, the firmware doesn't find a
kernel to boot from due to a bug. To avoid breaking all the peppy
devices on the lab we disable the test until issue 337574 is fixed.

BUG=chromium:337574
TEST=test_that --fast -b daisy $DUT platform_Powerwash

Change-Id: I9d55597b19774a3b5f258ad86d92019a5ad779c7
Reviewed-on: https://chromium-review.googlesource.com/183755
Reviewed-by: Alex Miller <milleral@chromium.org>
Tested-by: Alex Deymo <deymo@chromium.org>
Commit-Queue: Alex Deymo <deymo@chromium.org>
1 file changed