Fix commented agent association test in workspace_spec.rb

Issue: Fix commented agent association test in workspa... (#409786 - closed)

What does this MR do and why?

Fixes commented agent association test in workspace_spec.rb.

See details in Fix commented agent association test in workspa... (#409786 - closed)

Also does some cleanup/refactoring of the associations section of the spec.

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• I have evaluated the MR acceptance checklist for this MR.

Closes #409786 (closed)