Add preconditions for required configuration attrs

[pst]

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[Copilot]

Pull request overview

This PR introduces lifecycle precondition checks to enforce required configuration attributes across multiple cloud provider cluster/node-pool modules, and updates tests/quickstarts/CI to supply newly required attributes.

Changes:

• Add lifecycle { precondition { ... } } guards for required configuration attributes in AWS, AzureRM, Google, and Scaleway modules.
• Update AKS test configs and AKS quickstart configs to include availability_zones (with CI sed injection support).
• Remove now-resolved “missing preconditions” entries from DEVIATIONS.md and document the quickstart placeholder + CI injection pattern in AGENTS.md.

Reviewed changes

Copilot reviewed 16 out of 16 changed files in this pull request and generated 10 comments.

Show a summary per file

File	Description
tests/aks_zero_node_pools.tf	Adds availability_zones to node pool test config.
tests/aks_zero_cluster.tf	Adds availability_zones to cluster test config.
scaleway/cluster/node-pool/main.tf	Adds preconditions for required node-pool attrs; adjusts for_each expression.
scaleway/cluster/main.tf	Adds preconditions for region and cluster_version.
google/cluster/node-pool/main.tf	Adds preconditions for required node-pool attrs.
google/cluster/main.tf	Adds preconditions for required cluster attrs.
azurerm/cluster/node-pool/main.tf	Adds preconditions for required node-pool attrs; refactors lifecycle placement.
azurerm/cluster/main.tf	Adds preconditions for required cluster/default node pool attrs.
aws/cluster/node_pool.tf	Passes availability_zones from cluster config into default node-pool submodule.
aws/cluster/node-pool/main.tf	Adds preconditions for required node-pool attrs; refactors lifecycle placement.
aws/cluster/main.tf	Adds precondition for cluster_availability_zones.
quickstart/src/configurations/multi-cloud/aks_zero_cluster.tf	Adds availability_zones placeholder + docs.
quickstart/src/configurations/aks/aks_zero_cluster.tf	Adds availability_zones placeholder + docs.
.github/workflows/main.yml	Adds CI sed injection for AKS availability_zones.
DEVIATIONS.md	Removes entries that are addressed by new preconditions.
AGENTS.md	Documents obligations and standardizes precondition error message format.

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[Copilot]

Pull request overview

Copilot reviewed 24 out of 24 changed files in this pull request and generated 4 comments.

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