We are at the point that all distributions we are building have Python
3, so any tools running in the chroot can assume Python 3 exists.
This makes dib-python redundant; mark it as deprecated and start to
remove it from elements where it is no longer required.
Change-Id: I5d852843ec65d3b04444b77c54c5b82424455cd8
In order to allow the simple preparation of base images which
can be used for LXC/nspawn machine containers, we add this
element.
Containers inherit a kernel from the host, so there is no need
to build a kernel into the image. All the element needs is a
base init system which, in this case, is systemd.
Change-Id: I45651de2aa1b19bdeee301094f0bdffdd0a3b45c