build breadcrumbs of unembargoed builds in private ppa link to the ppa which is inaccessible

[Robert Collins]

This page https://launchpad.net/~ubuntu-security/+archive/ppa/+build/3244524 includes breadcrumbs pointing to https://launchpad.net/~ubuntu-security/+archive/ppa

The former page is publically accessible, the latter is private to the ubuntu-security team. LP is generating URLs users cannot access.

The former page is for a build that has been copied into Ubuntu to fix a security issue, so the build *is* publically visible; whether it should be shown under the private PPA is a good question, as is whether the breadcrumbs should cope with this case.