Allow custom postgres pod label to support user managed pg pods

- Only set resolvable pg host path for pg container when managed

deploy/crds/awx_v1beta1_crd.yaml

@@ -58,6 +58,9 @@ spec:
                 tower_old_postgres_configuration_secret:
                   description: Secret where the old database configuration can be found for data migration
                   type: string
+                postgres_label_selector:
+                  description: Label selector used to identify postgres pod for data migration
+                  type: string
                 tower_secret_key_secret:
                   description: Secret where the secret key can be found
                   type: string

deploy/crds/awxbackup_v1beta1_crd.yaml

@@ -53,5 +53,9 @@ spec:
                 tower_postgres_configuration_secret:
                   description: Custom postgres_configuration secret name
                   type: string
+                postgres_label_selector:
+                  description: Label selector used to identify postgres pod for backing up data
+                  type: string
+
               oneOf:
                 - required: ["tower_name"]

deploy/crds/awxrestore_v1beta1_crd.yaml

@@ -50,5 +50,8 @@ spec:
                 tower_postgres_configuration_secret:
                   description: Custom postgres_configuration secret name
                   type: string
+                postgres_label_selector:
+                  description: Label selector used to identify postgres pod for backing up data
+                  type: string
               oneOf:
                 - required: ["tower_name", "tower_backup_pvc", "tower_backup_pvc_namespace", "tower_backup_dir"]