Log reason in debug message why ldb_modify failed Reviewed-by: Sumit Bose <sbose@redhat.com>

SYSDB: Reduce code duplication in sysdb_gpo.c Two places in sysdb_gpo.c were searching for the GPO result object while the only difference was the attributes searched for. Remove this duplication and make the search function static as it's not used outside the module. Reviewed-by: Pavel Reichl <preichl@redhat.com>

TESTS: Cover sysdb_gpo.c with unit tests Untested code is risky to change. Reviewed-by: Pavel Reichl <preichl@redhat.com>

AD-GPO resolve conflicting policy settings correctly Resolves: https://fedorahosted.org/sssd/ticket/2437 Reviewed-by: Stephen Gallagher <sgallagh@redhat.com>

AD-GPO: delete stale GPOs https://fedorahosted.org/sssd/ticket/2431 Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

AD-GPO: sysdb_gpo changes for offline gpo support Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

AD-GPO: add ad_gpo_cache_timeout option Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

AD-GPO: add sysdb_gpo support for caching gpo version Reviewed-by: Jakub Hrozek <jhrozek@redhat.com> Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>