login_hint from shibboleth sp to azure idp

[Cantor, Scott]

> You should be able to modify the Metadata for the Azure IdP to
>add ?whr=<login-hint-domain> to the SingleSignOnService URLs,
> as long as you are hosting a copy locally that you can edit.

I assumed the goal was a per-user hint, but if it's static, yes, that should work. Our code is smart enough to detect the existing query string AFAIK.

-- Scott