add option to prevent PVC removal on cluster deletion (#2579)

* add option to prevent PVC removal on cluster deletion
* Update docs/reference/operator_parameters.md

Co-authored-by: Motte <37443982+dmotte@users.noreply.github.com>

charts/postgres-operator/crds/operatorconfigurations.yaml

@@ -211,6 +211,9 @@ spec:
                   enable_init_containers:
                     type: boolean
                     default: true
+                  enable_persistent_volume_claim_deletion:
+                    type: boolean
+                    default: true
                   enable_pod_antiaffinity:
                     type: boolean
                     default: false

charts/postgres-operator/values.yaml

@@ -129,6 +129,8 @@ configKubernetes:
   enable_finalizers: false
   # enables initContainers to run actions before Spilo is started
   enable_init_containers: true
+  # toggles if operator should delete PVCs on cluster deletion
+  enable_persistent_volume_claim_deletion: true
   # toggles pod anti affinity on the Postgres pods
   enable_pod_antiaffinity: false
   # toggles PDB to set to MinAvailabe 0 or 1