Changed how the operating system is provided to Chroot (API change).

* Where before debootstrapped and bootstrapped took a System parameter,
  the os property should now be added to the Chroot.
* Follow-on change to Systemd.container, which now takes a System parameter.

Two motivations for this change:

1. When using ChrootTarball, there may be no particular System that
   makes sense for the contents of the tarball, so don't force the user to
   specify one.
2. When creating a chroot for a disk image with the same properties
   as an existing Host, using hostProperties host to get them, this
   allows inheriting the os property from the host, and doesn't require
   it to be redundantly passed to Chroot.debootstrapped.

0 files changed, 0 insertions, 0 deletions