Adding ChangePasswordURLUsingAffiliations to

fieldtrial_testing_config.json

Bug: 1108279
Change-Id: I289d21394f5247e1574342efa0df2ef60e258ab7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2687619


Reviewed-by: Dana Fried <dfried@chromium.org>
Reviewed-by: Jan Wilken Dörrie <jdoerrie@chromium.org>
Commit-Queue: Viktor Semeniuk <vsemeniuk@google.com>
Cr-Commit-Position: refs/heads/master@{#855205}