Feat: enable owner references (#2688)

* feat(498): Add ownerReferences to managed entities
* empty owner reference for cross namespace secret and more tests
* update ownerReferences of existing resources
* removing ownerReference requires Update API call
* CR ownerReference on PVC blocks pvc retention policy of statefulset
* make ownerreferences optional and disabled by default
* update unit test to check len ownerReferences
* update codegen
* add owner references e2e test
* update unit test
* add block_owner_deletion field to test owner reference
* fix typos and update docs once more
* reflect code feedback

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Co-authored-by: Max Begenau <max@begenau.com>

charts/postgres-operator/values.yaml

@@ -129,8 +129,8 @@ configKubernetes:
   enable_finalizers: false
   # enables initContainers to run actions before Spilo is started
   enable_init_containers: true
-  # toggles if operator should delete secrets on cluster deletion
-  enable_secrets_deletion: true
+  # toggles if child resources should have an owner reference to the postgresql CR
+  enable_owner_references: false
   # toggles if operator should delete PVCs on cluster deletion
   enable_persistent_volume_claim_deletion: true
   # toggles pod anti affinity on the Postgres pods
@@ -139,6 +139,8 @@ configKubernetes:
   enable_pod_disruption_budget: true
   # toogles readiness probe for database pods
   enable_readiness_probe: false
+  # toggles if operator should delete secrets on cluster deletion
+  enable_secrets_deletion: true
   # enables sidecar containers to run alongside Spilo in the same pod
   enable_sidecars: true