fix fixAzureLinuxV3Gen2Kata

[Sri Harsha (SriHarsha001)]

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

[aks-node-assistant]

AgentBaker Linux gate detective

Run: 183921579
Failed job/stage/task: e2e / Run AgentBaker E2E / Run AgentBaker E2E

Detective summary: The E2E run completed 192 scenarios with 26 passed, 0 flaky, 74 skipped, and 92 failed. The failures are broad VMSS creation failures where ARM reports quota / not enough regional vCPU quota in WestUS3 before nodes can be provisioned.

Likely cause/signature: �2e-westus3-vmss-quota-exceeded — shared WestUS3 regional vCPU quota/capacity exhaustion during E2E VMSS creation.

Confidence: High. Timeline isolates the failure to Run AgentBaker E2E; the task log shows many scenarios failing before validation at VMSS create with quota guidance; this repeats the same signature seen in PR #9484 runs; PR #9690 changes Kata/containerd/CSE code, but the failing scenarios do not reach node provisioning.

Recommended owner/action: Gate/infra owners should restore or raise WestUS3 quota/capacity for the E2E subscription/region before rerunning. No PR code action is indicated by this run.

Strongest alternative: PR #9690 directly touches Kata/containerd templates and validators, so PR-caused E2E failures are possible in principle; however the observed failures happen at ARM VMSS creation due to quota, before the PR code path can be validated.

Evidence: run, E2E task log, wiki signature

[github-actions]

PR Title Lint Failed ❌

Current Title: fix fixAzureLinuxV3Gen2Kata

Your PR title doesn't follow the expected format. Please update your PR title to follow one of these patterns:

Conventional Commits Format:

• feat: add new feature - for new features
• fix: resolve bug in component - for bug fixes
• docs: update README - for documentation changes
• refactor: improve code structure - for refactoring
• test: add unit tests - for test additions
• chore: remove dead code - for maintenance tasks
• chore(deps): update dependencies - for updating dependencies
• ci: update build pipeline - for CI/CD changes

Guidelines:

• Use lowercase for the type and description
• Keep the description concise but descriptive
• Use imperative mood (e.g., "add" not "adds" or "added")
• Don't end with a period

Examples:

• ✅ feat(windows): add secure TLS bootstrapping for Windows nodes
• ✅ fix: resolve kubelet certificate rotation issue
• ✅ docs: update installation guide
• ❌ Added new feature
• ❌ Fix bug.
• ❌ Update docs

Please update your PR title and the lint check will run again automatically.

[github-actions]

Windows Unit Test Results

  3 files   18 suites   1m 12s ⏱️
551 tests 551 ✅ 0 💤 0 ❌
554 runs  554 ✅ 0 💤 0 ❌

Results for commit 31df3c1.

♻️ This comment has been updated with latest results.

[github-actions]

Package	Line Rate	Health
test	0%	❌
windows	27%	❌
staging_cse_windows Package 1	65%	➖
debug	0%	❌
provisioningscripts	2%	❌
parts_windows Package 1	76%	➖
Summary	39% (1663 / 6838)	❌

[github-actions]

Package	Line Rate	Health
github.com/Azure/agentbaker/aks-node-controller	72%	➖
github.com/Azure/agentbaker/aks-node-controller/common	100%	✔
github.com/Azure/agentbaker/aks-node-controller/helpers	71%	➖
github.com/Azure/agentbaker/aks-node-controller/parser	88%	✔
github.com/Azure/agentbaker/aks-node-controller/pkg/gpu	100%	✔
github.com/Azure/agentbaker/aks-node-controller/pkg/nodeconfigutils	67%	➖
github.com/Azure/agentbaker/aks-node-controller/utils	0%	❌
github.com/Azure/agentbaker/apiserver	25%	❌
github.com/Azure/agentbaker/cmd	0%	❌
github.com/Azure/agentbaker/cmd/starter	0%	❌
github.com/Azure/agentbaker/fuzz/api	0%	❌
github.com/Azure/agentbaker/hotfix/render-nodecustomdata	0%	❌
github.com/Azure/agentbaker/pkg/agent	77%	➖
github.com/Azure/agentbaker/pkg/agent/datamodel	77%	➖
github.com/Azure/agentbaker/pkg/agent/toggles	0%	❌
github.com/Azure/agentbaker/pkg/vhdbuilder/datamodel	88%	✔
Summary	74% (6426 / 8694)	➖

[github-actions]

Package	Line Rate	Health
shellspec spec	22%	❌
Summary	22% (3185 / 14372)	❌

[aks-node-assistant]

AgentBaker Linux gate detective

Run: 183955650
Failed job/stage/task: build / buildAzureLinuxV3gen2kata / Test, Scan, and Cleanup

Detective summary: Build VHD completed for AzureLinuxV3 Kata, but Test/Scan failed testContainerd because moby-containerd is not installed; the failure repeated in the content-test output before the task exited 2.

Likely cause / signature: vhd-azurelinuxv3kata-moby-containerd-missing-testscan - AzureLinuxV3 Kata VHD content no longer has the expected moby-containerd package, likely tied to PR 9690's containerd schema/config changes.

Confidence: Medium-high for VHD content/package regression surfaced by Test/Scan.

Recommended owner/action: PR owner should verify package expectations for AzureLinuxV3 Kata and either restore/install the expected containerd package or update the content test for the intended runtime package.

Strongest alternative: A transient test VM package-query issue is possible, but the task reached the validation VM and repeated the same deterministic content-test error.

Evidence: build run, failed timeline records, focused failed task log, build metadata, PR changed files, and wiki tracker.

Wiki: vhd-azurelinuxv3kata-moby-containerd-missing-testscan