[SSSD] [sssd PR#668][opened] pam_sss: add try_cert_auth and require_cert_auth options

URL: https://github.com/SSSD/sssd/pull/668 Author: sumit-bose Title: #668: pam_sss: add try_cert_auth and require_cert_auth options Action: opened PR body: """ With this new options Smartcard authentication can be checked or required for e.g. local users. Related to https://pagure.io/SSSD/sssd/issue/3650 """ To pull the PR as Git branch: git remote add ghsssd https://github.com/SSSD/sssd git fetch ghsssd pull/668/head:pr668 git checkout pr668