autotest: Add peerd related tests to nightly suite

Should these tests prove reliable, we'll run them as part of
the BVT and remove them from this suite.

BUG=chromium:433090
TEST=None

Change-Id: Ia0491b3e4ae9cf14e33ffb10de35f0e7a32fbb80
Reviewed-on: https://chromium-review.googlesource.com/230840
Reviewed-by: Christopher Wiley <wiley@chromium.org>
Commit-Queue: Christopher Wiley <wiley@chromium.org>
Tested-by: Christopher Wiley <wiley@chromium.org>
4 files changed