It's easy to forget to override them, and you'll end up with a well known
password used in your keystone and database. Use the password module
to generate secure random passwords instead. Operators of production
environments are still expected to provide their own passwords.
The generated passwords are stored in /etc/bifrost and reused on the next
installation. A new task is provided for upgrading the bootstrap (admin)
user in keystone to the new password.
Change-Id: I6771015f2b062233eeff85704655c8e2ab64364d
2a6fc72559