Code review comment for lp:~andreserl/maas/lp1561954

Considering this code doesn't have to do much more than set a username/password or URLs and such, you could have done it with a single udeb which asks the question whether you want to install a region controller or rack controller (the question would be preseeded for the purpose of the Server CD anyway). That said, the approach to take is yours to choose.

I'm a little concerned with the pkgsel and tasksel usage though, as I can see this would likely override other preseeding set by the user, which may not be what you want:
+db_set pkgsel/include maas
+set_question tasksel tasksel/first multiselect "standard, server"

This will override pkgsel/include, so you may wish to db_get it first and merge the changes in (no deduplication needed), and the same applies to tasksel/first.