Add ZFS support to netboot files.
I find it incredibly handy being able to netboot Alpine Linux, however,
not being able to use ZFS is a deal-breaker for me.
Adding the module(s) at runtime is problematic due to the read-only nature of a netboot environment.
Would it be possible to add zfs kernel modules to the netboot images?
(from redmine: issue id 10544, created on 2019-06-07)