MSI Unit Test for verfied validation within Bedrock

[NathanielRose]

As a: Operator

I want: Verify MSI support for AKS git modules within an automated unit test

So that: Validation of the MSI modules and integration with bedrock environments are confirmed in CI pipeline. Have a manifest that is able to communicate with key vault through pod identity and smoke test a key.

Describe the solution you'd like:

• Unit test for aks-gitops module
• Added test in Integration test pipeline

Acceptance Criteria:

• [x] MSI support for gitops https://github.com/microsoft/bedrock/issues/994
• [x] Design Document https://github.com/microsoft/bedrock/issues/1286
• [x] MSI AKS Environment https://github.com/microsoft/bedrock/issues/1345
• [ ] MSI Unit Test | MSI Smoke Test https://github.com/microsoft/bedrock/issues/1401

Tentative Additional Tasks:

• [ ] [Spike] CSI vs FlexVolume https://github.com/microsoft/bedrock/issues/1355
• [ ] Upgrade bedrock azurerm provider to 2.5
• [ ] Application Gateway + MSI AKS implementation

Additional context: Related to:

• https://github.com/microsoft/bedrock/pull/995
• https://github.com/microsoft/bedrock/issues/612
• https://github.com/microsoft/bedrock/issues/482

Does this require updates to documentation?: No

[NathanielRose]

@erikschlegel