Comment 45 for bug 1420049

FYI: We have to set the amd64 arch constraint at the time of bootstrap so that a ppc64el host isn't arbitrarily chosen as the bootstrap node by MAAS.

The expected behavior in this scenario is for juju lxc deployments to mirror the behavior of non-lxc deployments. Since it is working in this case for non-lxc units, it should also be made to work for lxc units.

PS the reproducer script has been in the bug since comment #1, though I've cut it down for simplification.