pam_sss: add support for SSS_PAM_CERT_INFO_WITH_HINT
The new response type SSS_PAM_CERT_INFO_WITH_HINT is equivalent to
SSS_PAM_CERT_INFO but tells pam_sss to prompt for an option user name as
well.
Resolves:
https://pagure.io/SSSD/sssd/issue/3395
Reviewed-by: Fabiano FidĂȘncio <fidencio@redhat.com>