Fix tests, minor style issues, offline CAB update

[Borgquite]

Pull Request (PR) description

@johlju Have started work on this module with a lot of small ‘cleanup’ tasks.

Hopefully there’s no argument over these changes - gets the tests working, fixes some dodgy strings, updates the offline CAB, adds some additional Classification GUIDs to the notes for convenience. It should hopefully be a quick and easy one for review & approval :)

This Pull Request (PR) fixes the following issues

None

Task list

• [x] Added an entry under the Unreleased section of the change log in the CHANGELOG.md. Entry should say what was changed, and how that affects users (if applicable).
• [x] Resource documentation added/updated in README.md.
• [x] Resource parameter descriptions added/updated in README.md, schema.mof and comment-based help.
• [x] Comment-based help added/updated.
• [x] Localization strings added/updated in all localization files as appropriate.
• [ ] Examples appropriately added/updated.
• [x] Unit tests added/updated. See DSC Resource Testing Guidelines.
• [x] Integration tests added/updated (where possible). See DSC Resource Testing Guidelines.
• [x] New/changed code adheres to DSC Resource Style Guidelines and Best Practices.

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This change is 

[Borgquite]

@johlju Are you able to take a look at this sometime please?

[johlju]

When I have time I will take a look. 🙂

[johlju]

Thanks for the detailed explanation! 🙂 So to be able to do this in the pipeline, we would have to install a WSUS server, sync it to MS Update and configure the new classifications and products then run the command. Would it be feasible to do all that without user intervention for each deploy in Azure Pipelines on a Win2022 Server build worker within its 4 hour run time?

[johlju]

The diff of the .cab file is so large so it is not feasible to review it, I have to assume it is correct and valid. 🙂

[johlju]

I added issue #81 to track if there is a way to automate generating the .cab file.