[oe] {RFC} rootfs directory path

[Frans Meulenbroeks]

Currently the rootfs ends up in ${TMPDIR}/work/rootfs/console-image
(at least if I bake console-image).
When dealing with multiple systems and either doing a parallel build
or keep the rootfs that could lead to inconsistent/faulty situations.
Shouldn't the dir be something like
${TMPDIR}/work/rootfs/$DISTRO}-${MACHINE}/console-image or so
(or maybe $DISTRO/$MACHINE or the other way around).

How do you feel about it (and what would be the preferred path?)

Frans