feat: Add owner references to all resources

[mbegenau]

Previously, only the Service and Deployment resource managed by the operator had an OwnerReference linking it to the StatefulSet. Now, all managed resources get an OwnerReference pointing to the Postgresql resource.

Fixes #498.

[batazor]

It would be cool to add support for OwnerReferences references. Is there anything that prevents us from adopting this PR?

[sass1997]

+1

[jhpinson]

+1

[drivebyer]

+1

[Yingrjimsch]

+1

[amitde69]

+1

[itayvolo]

+1

[metajiji]

+1 any news?

[Demch1k]

Hello everyone!
When we wil see it in postgres operator?
It's well needed feature for us, because we can't use ArgoCD with zalando operator without owner references.

[fm2022aa]

+1

[FxKu]

Suggested change

	if podDisruptionBudget.ObjectMeta.Namespace != "myapp" {
	return fmt.Errorf("Object Namespace incorrect.")
	}
	if !reflect.DeepEqual(podDisruptionBudget.Labels, map[string]string{"team": "myapp", "cluster-name": "myapp-database"}) {
	return fmt.Errorf("Labels incorrect.")
	}
	if !reflect.DeepEqual(podDisruptionBudget.Spec.Selector, &metav1.LabelSelector{
	masterLabelSelectorDisabled := cluster.OpConfig.PDBMasterLabelSelector != nil && !*cluster.OpConfig.PDBMasterLabelSelector
	if podDisruptionBudget.ObjectMeta.Namespace != "myapp" {
	return fmt.Errorf("Object Namespace incorrect.")
	}
	if !reflect.DeepEqual(podDisruptionBudget.Labels, map[string]string{"team": "myapp", "cluster-name": "myapp-database"}) {
	return fmt.Errorf("Labels incorrect.")
	}
	if !masterLabelSelectorDisabled &&
	!reflect.DeepEqual(podDisruptionBudget.Spec.Selector, &metav1.LabelSelector{

[FxKu]

And final test case must be changed to

		{
			scenario: "With PDBMasterLabelSelector disabled",
			spec: New(
				Config{OpConfig: config.Config{Resources: config.Resources{ClusterNameLabel: "cluster-name", PodRoleLabel: "spilo-role"}, PDBNameFormat: "postgres-{cluster}-pdb", EnablePodDisruptionBudget: util.True(), PDBMasterLabelSelector: util.False()}},
				k8sutil.KubernetesClient{},
				acidv1.Postgresql{
					ObjectMeta: metav1.ObjectMeta{Name: "myapp-database", Namespace: "myapp"},
					Spec:       acidv1.PostgresSpec{TeamID: "myapp", NumberOfInstances: 3}},
				logger,
				eventRecorder),
			check: []func(cluster *Cluster, podDisruptionBudget *policyv1.PodDisruptionBudget) error{
				testPodDisruptionBudgetOwnerReference,
				hasName("postgres-myapp-database-pdb"),
				hasMinAvailable(1),
				testLabelsAndSelectors,
			},
		},