Azure / karpenter-provider-azure / 22813389206

Pull #1455

github

refactor: use whole-struct hashing with exclude list for batch grouping

Replace manual templateKey struct with a shallow-copy-and-zero approach:
copy MachineProperties, nil out per-machine and read-only fields (Tags,
ETag, ProvisioningState, ResourceID, Status), then JSON-marshal and hash.

This automatically includes any new fields the SDK adds (fail-safe).
A reflection-based guardrail test catches unaccounted-for fields.

Analysis confirmed all template fields are safe for batching:
- NodeLabels: from NodePool template, not NodeClaim-unique
- NodeTaints: always empty at creation time
- NodeInitializationTaints: from NodePool template
- NodeImageVersion, EnableEncryptionAtHost: from NodePool template

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

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