Comment 13 for bug 1782267

@Bob, containerized UC has no more openstack service users (but heat) defined on host system. Instead, those now live in Kolla containers. The error message [Errno 13] Permission denied: '/var/lib/ironic/httpboot/boot.ipxe' may be the root cause, or a red herring as well - it is being ovserved for quite a while, like a several months or so. Anyway, it should be fixed, indeed.