feat: kubesphere 4.0 (#6115)

* feat: kubesphere 4.0

Signed-off-by: ci-bot <ci-bot@kubesphere.io>

* feat: kubesphere 4.0

Signed-off-by: ci-bot <ci-bot@kubesphere.io>

---------

Signed-off-by: ci-bot <ci-bot@kubesphere.io>
Co-authored-by: ks-ci-bot <ks-ci-bot@example.com>
Co-authored-by: joyceliu <joyceliu@yunify.com>

vendor/k8s.io/apiextensions-apiserver/pkg/apiserver/schema/defaulting/prunenulls.go

@@ -0,0 +1,66 @@
+/*
+Copyright 2020 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package defaulting
+
+import structuralschema "k8s.io/apiextensions-apiserver/pkg/apiserver/schema"
+
+func isNonNullableNonDefaultableNull(x interface{}, s *structuralschema.Structural) bool {
+	return x == nil && s != nil && s.Generic.Nullable == false && s.Default.Object == nil
+}
+
+func getSchemaForField(field string, s *structuralschema.Structural) *structuralschema.Structural {
+	if s == nil {
+		return nil
+	}
+	schema, ok := s.Properties[field]
+	if ok {
+		return &schema
+	}
+	if s.AdditionalProperties != nil {
+		return s.AdditionalProperties.Structural
+	}
+	return nil
+}
+
+// PruneNonNullableNullsWithoutDefaults removes non-nullable
+// non-defaultable null values from object.
+//
+// Non-nullable nulls that have a default are left alone here and will
+// be defaulted later.
+func PruneNonNullableNullsWithoutDefaults(x interface{}, s *structuralschema.Structural) {
+	switch x := x.(type) {
+	case map[string]interface{}:
+		for k, v := range x {
+			schema := getSchemaForField(k, s)
+			if isNonNullableNonDefaultableNull(v, schema) {
+				delete(x, k)
+			} else {
+				PruneNonNullableNullsWithoutDefaults(v, schema)
+			}
+		}
+	case []interface{}:
+		var schema *structuralschema.Structural
+		if s != nil {
+			schema = s.Items
+		}
+		for i := range x {
+			PruneNonNullableNullsWithoutDefaults(x[i], schema)
+		}
+	default:
+		// scalars, do nothing
+	}
+}