add pdb_master_label_selector to helm chart and example manifests (#2595)

* add pdb_master_label_selector to helm chart and example manifests

manifests/configmap.yaml

@@ -119,6 +119,7 @@ data:
   patroni_api_check_timeout: "5s"
   # password_rotation_interval: "90"
   # password_rotation_user_retention: "180"
+  pdb_master_label_selector: "true"
   pdb_name_format: "postgres-{cluster}-pdb"
   persistent_volume_claim_retention_policy: "when_deleted:retain,when_scaled:retain"
   # pod_antiaffinity_preferred_during_scheduling: "false"

manifests/operatorconfiguration.crd.yaml

@@ -279,6 +279,9 @@ spec:
                   oauth_token_secret_name:
                     type: string
                     default: "postgresql-operator"
+                  pdb_master_label_selector:
+                    type: boolean
+                    default: true
                   pdb_name_format:
                     type: string
                     default: "postgres-{cluster}-pdb"

manifests/postgresql-operator-default-configuration.yaml

@@ -85,6 +85,7 @@ configuration:
     #   status: ready
     # node_readiness_label_merge: "OR"
     oauth_token_secret_name: postgresql-operator
+    pdb_master_label_selector: true
     pdb_name_format: "postgres-{cluster}-pdb"
     persistent_volume_claim_retention_policy: 
       when_deleted: "retain"