Support inherited annotations for all major objects (#1236)

* add comments where inherited annotations could be added

* add inheritedAnnotations feature

* return nil if no annotations are set

* minor changes

* first downscaler then inherited annotations

* add unit test for inherited annotations

* add pvc to test + minor changes

* missing comma

* fix nil map assignment

* set annotations in the same order it is done in other places

* replace acidClientSet with acid getters in K8s client

* more fixes on clientSet vs getters

* minor changes

* remove endpoints from annotation test

* refine unit test - but deployment and sts are still empty

* fix checkinng sts and deployment

* make annotations setter one liners

* no need for len check anymore

Co-authored-by: Rafia Sabih <rafia.sabih@zalando.de>

charts/postgres-operator/crds/operatorconfigurations.yaml

@@ -166,6 +166,10 @@ spec:
                           type: string
                         template:
                           type: boolean
+                  inherited_annotations:
+                    type: array
+                    items:
+                      type: string
                   inherited_labels:
                     type: array
                     items:

charts/postgres-operator/values-crd.yaml

@@ -91,7 +91,11 @@ configKubernetes:
   # namespaced name of the secret containing infrastructure roles names and passwords
   # infrastructure_roles_secret_name: postgresql-infrastructure-roles
 
-  # list of labels that can be inherited from the cluster manifest
+  # list of annotation keys that can be inherited from the cluster manifest
+  # inherited_annotations:
+  # - owned-by
+
+  # list of label keys that can be inherited from the cluster manifest
   # inherited_labels:
   # - application
   # - environment

charts/postgres-operator/values.yaml

@@ -88,7 +88,10 @@ configKubernetes:
   # namespaced name of the secret containing infrastructure roles names and passwords
   # infrastructure_roles_secret_name: postgresql-infrastructure-roles
 
-  # list of labels that can be inherited from the cluster manifest
+  # list of annotation keys that can be inherited from the cluster manifest
+  # inherited_annotations: owned-by
+
+  # list of label keys that can be inherited from the cluster manifest
   # inherited_labels: application,environment
 
   # timeout for successful migration of master pods from unschedulable node