MSI Testing for verified validation within Bedrock

[NathanielRose]

As a: Operator I want: A smoke test and unit test that validates MSI + aks upon build So that: I can assure that incoming changes to aks-gitops module and the azure-msi template are verified. Describe the solution you'd like:

Acceptance Criteria:

• [ ] New pipeline for v2 testing harness
• [ ] Terraform init, plan and apply as separate steps in the pipeline
• [ ] Use terratest abstraction for unit test for azure-msi modules: aks-gitops, vnet, subnet
• [ ] Use terratest abstraction for integration test: flux verify

Describe alternatives you've considered:

Additional context:

• Needs manifest repo managed by bedrock team with voting app manifest
• Optional Performance test as http response for Voting app site
• Azure 2.5> provider or higher
• Epic: https://github.com/microsoft/bedrock/issues/1197

Does this require updates to documentation?: Yes