Create database in non-bootstrap hosts can fail

[grtjn]

A database that is not using <forests-per-host>, with a forest without explicit <host-name>, assigned to a group different than the one from the bootstrap host, will fail to create with a vague cast error telling:

XDMP-AS: (err:XPTY0004) $hostnr as xs:integer -- Invalid coercion: () as xs:integer

The code tries to determine the host for the single forest it is trying to create, but there is not explicit host-name. It then falls back to default-host, which is the bootstrap host. It will then try to determine hostnr against the hosts within the group of the database. But if bootstrap host is in a different group, then this fails.

I think it is better to fall back to the first of the hosts within the group, instead of default-host. That would mean hostnr would be always 1, and these kind of databases (like appname-modules and such) would all get attached to the same host, but that is already the case. You can always use <host-name> on the forest assignments to assign a particular forest to a particular host.

[grtjn]

Thought I fixed this, need to check..

[grtjn]

Fixed in dev..