Enable flux.driftDetection / backstage update to 2.5.2-bb.3

General MR

Summary

Enable flux.driftDetection

Relevant logs/screenshots

$ kubectl get hr -A -o json | jq ".items[].spec.driftDetection

query.json

Linked Issue

Closes #2605 (closed)

Upgrade Notices

Flux HelmRelease driftDetection has been enabled by default for all packages. See https://fluxcd.io/flux/components/helm/helmreleases/#drift-detection for details

This is set globally with flux.driftDetection.mode=enabled in Big Bang's values.yaml file.

Individual packages can turn off driftDetection or add additional field inside values.yaml or using overrides. e.g.

monitoring:
  flux:
    driftDetection:
      mode: disabled

addons:
  mattermost:
    flux:
      driftDetection:
        ignore:
          - paths: ["/spec/size"]
            target:
            kind: Mattermost