IdP-initiated logout for current user
Perform Single Logout for the current user when a logout is initiated
in the IdP.
A fake initial session is created. In the current logout code the
initial logout requestor holds the final redirect URL. In this case
it redirects back to the root IdP page.
Signed-off-by: Rob Crittenden <firstname.lastname@example.org>
Reviewed-by: Nathan Kinder <email@example.com>