Replace Azure Service Principal auth with Azure Workload Identity auth for long-running tests on AKS

[willdavsmith]

Description

• Replace Azure Service Principal auth with Azure Workload Identity auth for long-running tests on AKS

Note: I need to update the application in azure to reference the long-running tests AKS cluster OIDC endpoint

Type of change

• This pull request is a minor refactor, code cleanup, test improvement, or other maintenance task and doesn't change the functionality of Radius (issue link optional).

[radius-functional-tests]

Radius functional test overview

🔍 Go to test action run

Name	Value
Repository	willdavsmith/radius
Commit ref	9dc769a
Unique ID	func9a0a881b82
Image tag	pr-func9a0a881b82

Click here to see the list of tools in the current test run

• gotestsum 1.12.0
• KinD: v0.20.0
• Dapr: 1.12.0
• Azure KeyVault CSI driver: 1.4.2
• Azure Workload identity webhook: 1.3.0
• Bicep recipe location ghcr.io/radius-project/dev/test/testrecipes/test-bicep-recipes/<name>:pr-func9a0a881b82
• Terraform recipe location http://tf-module-server.radius-test-tf-module-server.svc.cluster.local/<name>.zip (in cluster)
• applications-rp test image location: ghcr.io/radius-project/dev/applications-rp:pr-func9a0a881b82
• controller test image location: ghcr.io/radius-project/dev/controller:pr-func9a0a881b82
• ucp test image location: ghcr.io/radius-project/dev/ucpd:pr-func9a0a881b82
• deployment-engine test image location: ghcr.io/radius-project/deployment-engine:latest

Test Status

⌛ Building Radius and pushing container images for functional tests...
✅ Container images build succeeded
⌛ Publishing Bicep Recipes for functional tests...
✅ Recipe publishing succeeded
⌛ Starting datastoresrp-cloud functional tests...
⌛ Starting corerp-cloud functional tests...
⌛ Starting ucp-cloud functional tests...
✅ datastoresrp-cloud functional tests succeeded
✅ ucp-cloud functional tests succeeded
✅ corerp-cloud functional tests succeeded

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 61.11%. Comparing base (62c6291) to head (9dc769a).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7806      +/-   ##
==========================================
- Coverage   61.12%   61.11%   -0.01%     
==========================================
  Files         532      532              
  Lines       28082    28082              
==========================================
- Hits        17164    17162       -2     
- Misses       9424     9425       +1     
- Partials     1494     1495       +1     

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[ytimocin]

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