The following revision refers to this bug:
  https://chromium.googlesource.com/external/github.com/luci/luci-py.git/+/66d820032ebcc6a8ff324f5a6e4dca69a135bb2f

commit 66d820032ebcc6a8ff324f5a6e4dca69a135bb2f
Author: maruel <maruel@chromium.org>
Date: Tue May 02 18:30:23 2017

Finally fix on_error_test hang.

This is due to recent python version which verifies certificate validity.

R=vadimsh@chromium.org
BUG= 695897 

Review-Url: https://codereview.chromium.org/2857443002

[modify] https://crrev.com/66d820032ebcc6a8ff324f5a6e4dca69a135bb2f/client/tests/on_error_test.py

Tested on the CI which runs an older version of python.