As a user, I want to be able to store credentials for different accounts/namespaces from the same registries in my credentials file so that I can pull from the different accounts when I need to.

The most common use case is when mirroring is being used and the only way to provide credentials for the mirrors to cri-o is via the global pull secret.

More details are in https://issues.redhat.com/browse/SDB-885.