Additional property auth is not allowed

[sebastian-luna-valero]

Bug description

Following the docs to add authentication to BinderHub: https://binderhub.readthedocs.io/en/latest/authentication.html

Using values.yaml with:

config:
  BinderHub:
    auth_enabled: true

jupyterhub:
  cull:
    # don't cull authenticated users
    users: False
  hub:
    redirectToServer: false
    config:
      BinderSpawner:
        auth_enabled: true
    services:
      binder:
        oauth_client_id: service-binderhub
        oauth_no_confirm: true
        oauth_redirect_uri: "https://<binderhub_url>/oauth_callback"
    loadRoles:
      user:
        scopes:
          - self
          - "access:services"

  singleuser:
    # to make notebook servers aware of hub
    cmd: jupyterhub-singleuser

  auth: {}

Expected behaviour

It should deploy BinderHub.

Actual behaviour

Running:

sudo helm upgrade binderhub jupyterhub/binderhub --install --cleanup-on-fail --create-namespace --namespace binderhub --version 1.0.0-0.dev.git.3002.h5f189ce --values values.yaml

Returns:

jupyterhub:
- (root): Additional property auth is not allowed

How to reproduce

Run:

sudo helm upgrade binderhub jupyterhub/binderhub --install --cleanup-on-fail --create-namespace --namespace binderhub --version 1.0.0-0.dev.git.3002.h5f189ce --values values.yaml

with:

# [...]

jupyterhub:

# [...]

  auth: {}

Your personal set up

• OS: ubuntu 20.04
• Version(s): k8s 1.23.11, helm v3.8.2, binderhub 1.0.0-0.dev.git.3002.h5f189ce

Full environment

``` # paste output of `pip freeze` or `conda list` here ```

Configuration

```python # jupyterhub_config.py ```

Logs

``` # paste relevant logs here, if any ```

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[manics]

Looks like a mistake, it should be nested under jupyterhub.auth. We should properly test the auth config from that doc.... It's on my todo list!