Add test environment for VM based MSI auth

[webtonize]

Story

As a product owner I want to have a GitHub actions based environment for testing VM based MSI auth so end-user can be sure this works. Solution should be cost efficient, have auto-shutdown and be easy to turn on.

Acceptance Criteria

• VM based test must output coverage, coverage to be merged by codecov.io
• Fix any bugs in current MSI VM auth code that arise in testing
• If MSI works different between Linux and Windows based pwsh core, both cases should be testable.
• ACA is the main platform for testing. All tests run on that platform should continue to pass. The VM platform should only run tests that are specific to running the module on a vm.

Limitations

Due to the direct impact on project budget, this task is only assignable to the project maintainer @webtonize

[webtonize]

MSI Auth has been updated to support Linux virtual machines in Azure. As no changes are expected soon, this will not be incorporated in regular CI/CD at this time