Add unit tests for scan-logic

Background

We need to add unit tests for the following files in the scan-logic stage.

• stages/scan-logic/image_verify.py
• stages/scan-logic/scan_logic_jobs.py

We will need to mock the appropriate classes, and please note that the main function is relatively nested so that there will be quite a few unit tests.

Acceptance Criteria

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Definition of Done

• Write or update any unit or integration tests
• Project pipeline runs successfully
• Add any applicable checkboxes for testing e.g. Ran pipeline in staging env or pipeline-test-project pipeline run
• Solution is captured as code and/or documentation and merge requests have been submitted
• Code review completed and merge request approved/merged
• All Acceptance Criteria have been completed