fix: add podConfigVersion and save a calculated struct as annotation on a pod

[rugggger]

TL;DR

Added pod configuration versioning to track when pods need to be rotated due to configuration changes.

What changed?

• Added POD_CONFIG_VERSION environment variable to the manager deployment template
• Introduced podConfigVersion: 1 in the Helm chart values
• Created a new configuration field PodConfigVersion in the environment configuration
• Added WekaRuntimeVersion constant set to 1
• Implemented PodConfigHash() function that generates a SHA-256 hash from both pod config version and runtime version
• Added podConfigVersionAnnotation annotation to pods using the generated hash

How to test?

1. Deploy the operator with the new configuration
2. Verify that pods have the weka.io/pod-config-version annotation with a hash value
3. Change the podConfigVersion value in the Helm chart and redeploy
4. Confirm that the annotation hash changes, triggering pod rotation

Why make this change?

This enables the operator to automatically rotate pods when configuration changes occur, ensuring that pods are running with the latest configuration without requiring manual intervention.

[rugggger]

• fix: add UpdatableClusterSpec to the podConfig hash #2315
• fix: rotate pods on pod-config change #2299
• fix: add podConfigVersion and save a calculated struct as annotation on a pod #2298 👈 (View in Graphite)
• main

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[graphite-app]

Graphite Automations

"Add anton/matt/sergey/kristina as reviwers on operator PRs" took an action on this PR • (02/26/26)

3 reviewers were added to this PR based on Anton Bykov's automation.