feat: Adds a warning when a defined object override was not applied

[sweb]

Description

Adds a warning when a defined object override was not applied.

Optional: Adds the base namespace as default when the namespace of the override is not provided I removed this as it seems too much of a change.

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

[Maleware]

Up to the comment, LGTM thanks!

[sweb]

@Techassi could you take another look?

[lfrancke]

I know this is in operator-rs but once it lands in the operators...should this have release notes?