Code review comment for lp:~smoser/curtin/trunk.unshare-chroot

I've started another vmtest run, we don't have a successful run of this branch due to the port issue which is now fixed in trunk,

https://jenkins.ubuntu.com/server/view/Curtin/job/curtin-vmtest-devel-debug/80/

If that passes, I'll push that merge branch to trunk.