peerd: Refactor out PeerdConfig object

This will allow us to restart peerd with better verbosity setings
across server and client tests.

BUG=brillo:8
TEST=peerd_* tests pass.

Change-Id: Ia96cf669dbb7c3dbefe9539a97cfa8bc99ffd476
Reviewed-on: https://chromium-review.googlesource.com/246661
Tested-by: Christopher Wiley <wiley@chromium.org>
Reviewed-by: Alex Vakulenko <avakulenko@chromium.org>
Commit-Queue: Christopher Wiley <wiley@chromium.org>
5 files changed