Description

Part of stackabletech/hive-operator#678

The CRD schema of ChangedValue's value and downgradedValue fields was type: object.
Tracked values can be any JSON value, though. A string like "/stackable/warehouse" made the status patch fail with "expected map".

Drop the type and only set x-kubernetes-preserve-unknown-fields, which Kubernetes allows for structural schemas. Also set nullable so null values aren't pruned by the apiserver.

Add the same helper as raw_any_nullable_value_schema to stackable-operator, so other code can use it.

I also fixed a crate path bug I ran into while adding the status to the CRD previewer.

Definition of Done Checklist

• Not all of these items are applicable to all PRs, the author should update this template to only leave the boxes in that are relevant
• Please make sure all these things are done and tick the boxes

Author

• Changes are OpenShift compatible
• CRD changes approved
• CRD documentation for all fields, following the style guide.
• Integration tests passed (for non trivial changes)
• Changes need to be "offline" compatible

Reviewer

• Code contains useful comments
• Code contains useful logging statements
• (Integration-)Test cases added
• Documentation added or updated. Follows the style guide.
• Changelog updated
• Cargo.toml only contains references to git tags (not specific commits or branches)

Acceptance

• Feature Tracker has been updated
• Proper release label has been added