feat: adding MVO to structural tests

[SequeI]

Summary by Sourcery

Add support for Model Validation Operator to structural tests by extending parsing utilities, adding new image keys and constants, updating snapshot logic, and introducing dedicated acceptance test suites (operator images, file-based catalogs, and release validations) with accompanying README instructions.

New Features:

• Introduce acceptance tests for Model Validation Operator images, file-based catalog bundles, and release snapshots

Enhancements:

• Extend support package with ParseMVOperatorImages, MandatoryMvoOperatorImageKeys, and update imageRegexp to include mvo-fbc prefixes
• Add model-validation-operator image keys and ClusterServiceVersion file paths in test constants

Documentation:

• Update README with Model Validation Operator repository link and test execution commands

Tests:

• Add new acceptance test suites for model validation operator: operator_images_test, fbc_images_test, releases_images_test, and test suite initialization

[sourcery-ai]

Reviewer's Guide

This PR integrates Model Validation Operator (MVO) support into structural tests by adding parsing logic, constants, regex updates, documentation tweaks, and a full suite of acceptance tests under test/acceptance/model_transparency.

File-Level Changes

Change	Details	Files
Introduce MVO image parsing and key management	Add ParseMVOperatorImages function with regex-based extraction and string builder Define ModelValidationOperatorImageKey and bundle key constants Implement MandatoryMvoOperatorImageKeys returning mandatory image keys	test/support/acceptance.go test/support/test_constants.go
Extend snapshot mapping to recognize MVO FBC images	Update imageRegexp to include mvo-fbc- prefix	test/support/snapshot_map_type.go
Document MVO in README	Add Model Validation operator link Add test command instructions for model_transparency directory	README.md
Add acceptance tests for Model Validation Operator	Create operator_images_test.go validating registry presence and hash matching Create fbc_images_test.go for file-based catalog extraction and verification Create releases_images_test.go for snapshot file validations Create mvo_acceptance_suite_test.go to bootstrap the MVO test suite	test/acceptance/model_transparency/operator_images_test.go test/acceptance/model_transparency/fbc_images_test.go test/acceptance/model_transparency/releases_images_test.go test/acceptance/model_transparency/mvo_acceptance_suite_test.go

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[sourcery-ai]

Hey there - I've reviewed your changes - here's some feedback:

• ParseMVOperatorImages duplicates much of the PC parsing logic—consider extracting a common helper or parameterizing ParsePCOperatorImages to avoid code duplication.
• The regex-based image extraction in ParseMVOperatorImages is brittle; using a YAML parser or reusing the existing image‐parsing utilities would be more robust and maintainable.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- ParseMVOperatorImages duplicates much of the PC parsing logic—consider extracting a common helper or parameterizing ParsePCOperatorImages to avoid code duplication.
- The regex-based image extraction in ParseMVOperatorImages is brittle; using a YAML parser or reusing the existing image‐parsing utilities would be more robust and maintainable.

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