support KubeSpawner profile_options

[Adam-D-Lewis]

Reference Issues or PRs

Kubespawner has support to configure various docker images (or other options) per profile. See profile_options in their docs. We didn't support it in our Pydantic models so this adds support. I tested it and it worked on my local deployment.

I made a companion docs PR as well

What does this implement/fix?

Put a x in the boxes that apply

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds a feature)
• Breaking change (fix or feature that would cause existing features not to work as expected)
• Documentation Update
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Build related changes
• Other (please describe):

Testing

• Did you test the pull request locally?
• Did you add new tests?

How to test this PR?

Add this section to a nebari config.

profiles:
  jupyterlab:
  - display_name: Small Instance
    description: Stable environment with 2 cpu / 4 GB RAM
    default: true
    profile_options: &profile_options
      image:
        display_name: Image
        choices:
          base:
            display_name: jupyter/base-notebook:latest
            kubespawner_override:
              image: jupyter/base-notebook:latest
          minimal:
            display_name: quay.io/nebari/nebari-jupyterlab:latest
            default: true
            kubespawner_override:
              image: quay.io/nebari/nebari-jupyterlab:latest
    kubespawner_override:
      cpu_limit: 2
      cpu_guarantee: 1.5
      mem_limit: 4G
      mem_guarantee: 3G

  - display_name: Medium Instance
    description: Stable environment with 4 cpu / 8 GB RAM
    profile_options: *profile_options
    kubespawner_override:
      cpu_limit: 4
      cpu_guarantee: 3
      mem_limit: 8G
      mem_guarantee: 6G

then ensure the profile selection page looks something like

It works whether or not jhub_apps is enabled.

Any other comments?

[Adam-D-Lewis]

Failing "Local Integration Tests" test unrelated to this PR