Reland "Adding ChangePasswordURLUsingAffiliations to fieldtrial_testing_config.json"

This is a reland of 7f95892e

Original change's description:
> 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}

Bug: 1108279
Change-Id: I061b38fd49e9b5e1286994e716c8b45c02690706
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2704918


Commit-Queue: Viktor Semeniuk <vsemeniuk@google.com>
Reviewed-by: Vasilii Sukhanov <vasilii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#859752}