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>

pkg/apis/acid.zalan.do/v1/crds.go

@@ -1320,6 +1320,9 @@ var OperatorConfigCRDResourceValidation = apiextv1.CustomResourceValidation{
 							"enable_init_containers": {
 								Type: "boolean",
 							},
+							"enable_persistent_volume_claim_deletion": {
+								Type: "boolean",
+							},
 							"enable_pod_antiaffinity": {
 								Type: "boolean",
 							},

pkg/apis/acid.zalan.do/v1/operator_configuration_type.go

@@ -102,6 +102,7 @@ type KubernetesMetaConfiguration struct {
 	PodAntiAffinityTopologyKey               string              `json:"pod_antiaffinity_topology_key,omitempty"`
 	PodManagementPolicy                      string              `json:"pod_management_policy,omitempty"`
 	PersistentVolumeClaimRetentionPolicy     map[string]string   `json:"persistent_volume_claim_retention_policy,omitempty"`
+	EnablePersistentVolumeClaimDeletion      *bool               `json:"enable_persistent_volume_claim_deletion,omitempty"`
 	EnableReadinessProbe                     bool                `json:"enable_readiness_probe,omitempty"`
 	EnableCrossNamespaceSecret               bool                `json:"enable_cross_namespace_secret,omitempty"`
 	EnableFinalizers                         *bool               `json:"enable_finalizers,omitempty"`

pkg/apis/acid.zalan.do/v1/zz_generated.deepcopy.go

@@ -272,6 +272,11 @@ func (in *KubernetesMetaConfiguration) DeepCopyInto(out *KubernetesMetaConfigura
 			(*out)[key] = val
 		}
 	}
+	if in.EnablePersistentVolumeClaimDeletion != nil {
+		in, out := &in.EnablePersistentVolumeClaimDeletion, &out.EnablePersistentVolumeClaimDeletion
+		*out = new(bool)
+		**out = **in
+	}
 	if in.EnableFinalizers != nil {
 		in, out := &in.EnableFinalizers, &out.EnableFinalizers
 		*out = new(bool)