GitLab

Set a default empty policy file for policy_test_server. Only
warn when the file is missing.

Bug: chromium:668719
Change-Id: I474587cdf810716d485c3dca1aefb4f513cbbe22
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2215050Reviewed-by: Denis Kuznetsov [CET] <antrim@chromium.org>
Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Commit-Queue: Victor-Gabriel Savu <vsavu@google.com>
Cr-Commit-Position: refs/heads/master@{#776640}