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>

manifests/configmap.yaml

@@ -49,6 +49,7 @@ data:
   enable_master_pooler_load_balancer: "false"
   enable_password_rotation: "false"
   enable_patroni_failsafe_mode: "false"
+  enable_persistent_volume_claim_deletion: "true"
   enable_pgversion_env_var: "true"
   # enable_pod_antiaffinity: "false"
   # enable_pod_disruption_budget: "true"

manifests/operatorconfiguration.crd.yaml

@@ -209,6 +209,9 @@ spec:
                   enable_init_containers:
                     type: boolean
                     default: true
+                  enable_persistent_volume_claim_deletion:
+                    type: boolean
+                    default: true
                   enable_pod_antiaffinity:
                     type: boolean
                     default: false

manifests/postgresql-operator-default-configuration.yaml

@@ -59,6 +59,7 @@ configuration:
     # enable_cross_namespace_secret: "false"
     enable_finalizers: false
     enable_init_containers: true
+    enable_persistent_volume_claim_deletion: true
     enable_pod_antiaffinity: false
     enable_pod_disruption_budget: true
     enable_readiness_probe: false