update ToDo

ToDo

 - use encrypted root pw '$1$2nDbOTXS$yzM1ew/7KrdnPTfPVenPs0' instead of random string
 - add curl/wget and ca-certificates to standard install
-- nail chef-client to 12.5.1 (if still required at all)
 - add IPV6 support (hard/impossible via preseed)
 - cleanup authorized_keys after installation
-- improve scripts/configuration
 - refactor to t3-guest-install
+
+DONE
+==========
+
+- improve scripts/configuration
+- nail chef-client to 12.5.1 (if still required at all)