test(8.10): enable hub mixed upgrade scenario

[eamonnmoloney]

Summary

• Enables the 8.10 hub-mixed upgrade-minor scenario (hubmu).
• Adds the migrator feature to the upgrade flow.
• Keeps the existing CloudNativePG pre-install fixture and companion Keycloak/Elasticsearch dependencies.
• Updates the WebModeler init container wait target to the CloudNativePG service used by the scenario (postgresql-cluster-rw).

Validation

• make go.test chartPath=charts/camunda-platform-8.10
• deploy-camunda matrix list --repo-root . --versions 8.10 | grep -E 'hub|hubl|hubm|hubw'

[Copilot]

Pull request overview

Enables the previously-disabled 8.10 hub-mixed upgrade-minor integration scenario (hubmu) and aligns the scenario’s WebModeler PostgreSQL readiness wait with the CloudNativePG fixture service name used in 8.10 integration scenarios.

Changes:

• Enables the hub-mixed upgrade-minor scenario in charts/camunda-platform-8.10/test/ci-test-config.yaml and adds migrator to its features list.
• Updates the hub-mixed feature values to wait for postgresql-cluster-rw:5432 (CloudNativePG) instead of the old WebModeler Postgres service.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
charts/camunda-platform-8.10/test/integration/scenarios/chart-full-setup/values/features/hub-mixed.yaml	Updates WebModeler initContainer wait target to the CNPG service (postgresql-cluster-rw).
charts/camunda-platform-8.10/test/ci-test-config.yaml	Enables the hub-mixed upgrade-minor scenario in CI and updates its feature list.

[hisImminence]

Small, focused PR — mechanically correct. Two notes before merge:

Stale PR summary: description says "Adds the migrator feature" but commit 2 removed it. Final state is features: [hub-mixed] with no migrator. That's correct for 8.10 (per the comment at line 208: "upgrade migrators are only for 8.7 → 8.8"), but the summary should be updated to avoid confusing future readers.

postgresql-cluster-rw hardcode (hub-mixed.yaml:40-41): correct — the cnpg dependency profile provisions a CNPG Cluster via postgresql-cluster.yaml, which creates the postgresql-cluster-rw R/W service before install. Consider a short inline comment so the next reader knows why the name is static rather than release-scoped.