docker-dhcp-server/bind/config/states/bind/rndc.conf

key "rndc-key" {
        algorithm hmac-md5;
        secret "{{ salt['pillar.get']("model:dns:tsig:keys:rndc") }}";
};

options {
        default-key "rndc-key";
        default-server 127.0.0.1;
        default-port 953;
};