MAN: Document different defaults for AD provider Update man pages for any AD provider config options that differ from ldap/krb5 provider back-end defaults Resolves: https://fedorahosted.org/sssd/ticket/3214 Reviewed-by: Jakub Hrozek <jhrozek@redhat.com> Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>