There are two components here:
a) sssd to ship /etc/krb5.conf.d/enable_sssd_conf_dir
This was done in 2.7.0-1, and is present in ubuntu mantic and later
b) krb5.conf to includedir /etc/krb5.conf.d
This should be done in src:kerberos-configs, and is not done yet anywhere
There are two components here: conf.d/ enable_ sssd_conf_ dir
a) sssd to ship /etc/krb5.
This was done in 2.7.0-1, and is present in ubuntu mantic and later
b) krb5.conf to includedir /etc/krb5.conf.d configs, and is not done yet anywhere
This should be done in src:kerberos-