autotest: Add test for peerd related mDNS name conflicts

BUG=chromium:426173
TEST=This is a passing test.

Change-Id: I77a9d5fbbbcd46c682378c34aa697ec0368d4529
Reviewed-on: https://chromium-review.googlesource.com/226643
Tested-by: Christopher Wiley <wiley@chromium.org>
Reviewed-by: Alex Vakulenko <avakulenko@chromium.org>
Commit-Queue: Christopher Wiley <wiley@chromium.org>
3 files changed