LBU does not update boot apkvol if backups are requested
LBU does not copy the newly generated apkvol to LBU_MEDIA if
LBU_BACKUPDIR is enabled.
This led to some head scratching as to why the machine was booting with old configurations and deleted packages.
It is an annoyance. We have created a post-package sciprt as a temporary workaround.
However, our script is always run even in dry-run mode.
(from redmine: issue id 8774, created on 2018-04-07)