ansible: add support for user-defined registries
This enables users to bring their own registries, and have full control over them so that they can add access control.
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
This enables users to bring their own registries, and have full control over them so that they can add access control.