SYSDB: Decrese debuglevel in sysdb_get_certmap If we can ignore/fallback from such failure then it is not a critical debug message. (Tue Feb 6 16:16:25 2018) [sssd[pam]] [sysdb_get_certmap] (0x0020): Failed to read certmap config, skipping. Reviewed-by: Sumit Bose <sbose@redhat.com>

sysdb: sysdb_get_certmap() allow empty certmap Since sysdb_get_certmap() returns the user name hint information as well it should return a result even if there are no certmaps. Related to https://pagure.io/SSSD/sssd/issue/3395 Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>

sysdb: add certmap related calls Add sysdb calls to write and read data for the certificate mapping library to the cache. Related to https://pagure.io/SSSD/sssd/issue/3050 Reviewed-by: Jakub Hrozek <jhrozek@redhat.com> Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>