Comment 9 for bug 1507649

at the moment, for 8.0 ubuntu bootstrap image will be built by fuel-agent.

fuel-agent already has got retrying routine for handling such things.

according to the code, default value is 10 attempts
https://github.com/openstack/fuel-agent/blob/72f6c0ed2603596f414d30940b320f3d4b001017/fuel_agent/manager.py#L112-L116

seems that bug has been resolved.