change registry deployment so it works more intuitive and out of the box

[MichaelTrip]

Description

When i was configuring a custom registry i noticed that the config for the mirror was enabled by default. But in my case i don't need the mirroring option. I changed the role so those two can be deployed separately.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

For the test i overwrited the two variables in group_vars:

rke2_custom_registry_mirrors: []

rke2_custom_registry_configs:
  - endpoint: gitlab.domain.internal:5678
    config:
      auth:
        username: kubernetes
        password: kubernetes-password

I have tested this and it works. It creates this registries.yaml:

configs:
  gitlab.domain.internal:5678
    auth:
        username: kubernetes
        password: kubernetes-password

[MonolithProjects]

LGTM. Thanks!