Azure / karpenter-provider-azure / 23127814146

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Pull #1531

github

feat: parse Savings Plan prices from Azure Retail Prices API

The Retail Prices API already returns savingsPlan data per SKU but
Karpenter's Item struct was silently dropping it. Now parsed and
stored alongside onDemandPrices and spotPrices.

Changes:
- Added SavingsPlanPrice struct and SavingsPlan field to Item
- Added savingsPlanPrices map to pricing Provider
- Added SavingsPlanPrice() public getter and UpdateSavingsPlanPricing()
- SP prices fetched in parallel with OnDemand and Spot
- Stores lowest RetailPrice across all SP terms (1Y, 3Y) per SKU
- 4 new unit tests

This enables future cost-aware offering selection: SKUs with SP
pricing can be ranked by effective cost rather than retail price,
benefiting customers with Savings Plan commitments.

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

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