Comment 11 for bug 1557488

The issue reproduced again on 9.0:

https://packaging-ci.infra.mirantis.net/job/9.0-pkg-systest-ubuntu/742/

The symptoms are the same, in console log:
AssertionError: Ubuntu bootstrap image wasn't built and activated! See logs in /var/log/fuel-bootstrap-image-build.log for details.

In fuel-bootstrap-image-build.log in the snapshot the relevant line is:
got an error: 404 Client Error: Not Found for url: http://mirror.fuel-infra.org/mos-repos/ubuntu/9.0/dists/mos9.0-security/Release