define autoscaling behaviour with rolling update strategy

[henzigo]

No description provided.

[Copilot]

Pull request overview

Updates Kubernetes autoscaling and rollout behavior so deployments can roll safely under higher replica counts, and adjusts the manifest-generation tests/docs to match.

Changes:

• Add HPA behavior (scaleUp/scaleDown policies + stabilization windows) to both HPAs and include HPAs in the webserver kustomize output.
• Define/adjust Deployment rolling update strategy (storefront: new strategy; webserver-php-fpm: maxSurge percentage; further patched based on min replicas).
• Update test scenarios/expected outputs and documentation to reflect autoscaling now being default-on and bundled into webserver.yaml.

Reviewed changes

Copilot reviewed 25 out of 25 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/scenarios/production-with-cloudflare/expected/webserver.yaml	Expects rolling update strategy + both HPAs to be present in the webserver kustomize output.
tests/scenarios/production-with-cloudflare/expected/horizontalStorefrontAutoscaler.yaml	Removes standalone expected HPA file (now emitted via webserver kustomize output).
tests/scenarios/production-with-cloudflare/expected/horizontalPodAutoscaler.yaml	Removes standalone expected HPA file (now emitted via webserver kustomize output).
tests/scenarios/production-with-cloudflare/deploy-project.sh	Switches to replica-count variables (min/max) instead of explicit ENABLE_AUTOSCALING flag.
tests/scenarios/escaping-env/expected/webserver.yaml	Expects rolling update strategy + both HPAs to be present in the webserver kustomize output.
tests/scenarios/escaping-env/expected/horizontalStorefrontAutoscaler.yaml	Removes standalone expected HPA file.
tests/scenarios/escaping-env/expected/horizontalPodAutoscaler.yaml	Removes standalone expected HPA file.
tests/scenarios/escaping-env/deploy-project.sh	Removes explicit ENABLE_AUTOSCALING enablement (relies on new default behavior).
tests/scenarios/development-single-domain/expected/webserver.yaml	Expects rolling update strategy + both HPAs to be present; expects dev downscaling behavior (min=max=2).
tests/scenarios/development-single-domain/expected/horizontalStorefrontAutoscaler.yaml	Removes standalone expected HPA file.
tests/scenarios/development-single-domain/expected/horizontalPodAutoscaler.yaml	Removes standalone expected HPA file.
tests/scenarios/development-single-domain/deploy-project.sh	Removes explicit ENABLE_AUTOSCALING enablement (relies on new default behavior).
tests/scenarios/basic-production/expected/webserver.yaml	Expects rolling update strategy + both HPAs to be present in the webserver kustomize output.
tests/scenarios/basic-production/expected/horizontalStorefrontAutoscaler.yaml	Removes standalone expected HPA file.
tests/scenarios/basic-production/expected/horizontalPodAutoscaler.yaml	Removes standalone expected HPA file.
tests/scenarios/basic-production/deploy-project.sh	Removes explicit ENABLE_AUTOSCALING enablement (relies on new default behavior).
tests/run-tests.sh	Stops copying standalone HPA YAMLs into outputs (since they’re now built via kustomize).
kubernetes/horizontalStorefrontAutoscaler.yaml	Adds behavior configuration to storefront HPA template.
kubernetes/horizontalPodAutoscaler.yaml	Adds behavior configuration to php-fpm HPA template.
kubernetes/deployments/webserver-php-fpm.yaml	Changes rolling update maxSurge to percentage.
kubernetes/deployments/storefront.yaml	Adds explicit rolling update strategy (maxSurge/maxUnavailable/type).
deploy/parts/deploy.sh	Removes ENABLE_AUTOSCALING assertions and the old imperative HPA apply/delete logic.
deploy/parts/autoscaling.sh	Adds behavior for replica defaults/downscaling and patches rollout strategy; adds HPAs into webserver kustomization resources.
UPGRADE.md	Notes this autoscaling/rolling-update behavior change in the upgrade log.
README.md	Updates autoscaling section to reflect default-on behavior and how to disable it.

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