platform_PowerStatusStress: create power status stress test. Include in stress suite.

BUG=chromium:358927
TEST=Tested against a squawks device in lab

Change-Id: Ie5e5869df7ba1850e11defff1f380c6b8db79955
Reviewed-on: https://chromium-review.googlesource.com/198032
Reviewed-by: Yusuf Mohsinally <mohsinally@chromium.org>
Commit-Queue: Kalin Stoyanov <kalin@chromium.org>
Tested-by: Kalin Stoyanov <kalin@chromium.org>
2 files changed