add toggle to disable creation of CRD validation and document it

manifests/configmap.yaml

@@ -21,6 +21,7 @@ data:
   # default_memory_request: 100Mi
   docker_image: registry.opensource.zalan.do/acid/spilo-11:1.6-p1
   # enable_admin_role_for_users: "true"
+  # enable_crd_validation: "true"
   # enable_database_access: "true"
   enable_master_load_balancer: "false"
   # enable_pod_antiaffinity: "false"

manifests/operatorconfiguration.crd.yaml

@@ -14,6 +14,7 @@ spec:
   scope: Namespaced
   subresources:
     status: {}
+  version: v1
   validation:
     openAPIV3Schema:
       type: object
@@ -262,5 +263,3 @@ spec:
                   pattern: '^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$'
                 scalyr_server_url:
                   type: string
-
-  version: v1

manifests/postgresql-operator-default-configuration.yaml

@@ -3,6 +3,7 @@ kind: OperatorConfiguration
 metadata:
   name: postgresql-operator-default-configuration
 configuration:
+  # enable_crd_validation: true
   etcd_host: ""
   docker_image: registry.opensource.zalan.do/acid/spilo-11:1.6-p1
   # enable_shm_volume: true

manifests/postgresql.crd.yaml

@@ -14,6 +14,7 @@ spec:
   scope: Namespaced
   subresources:
     status: {}
+  version: v1
   validation:
     openAPIV3Schema:
       type: object
@@ -324,5 +325,3 @@ spec:
                   type: string
                 subPath:
                   type: string
-
-  version: v1