Redis: Re-create secure password on every barracuda upgrade.
Master Aegir: Re-create secure db password on every barracuda upgrade.
Master Aegir: Sync generating secure db password also on barracuda install.
Satellite Aegir: Re-create secure db password on every octopus upgrade.
Sync generating secure passwords also for limited shell users.
Re-generate new secure mysql root password on every barracuda upgrade.