update modules kustomize add helm

Signed-off-by: LiHui <andrewli@yunify.com>

vendor/sigs.k8s.io/kustomize/kyaml/yaml/mapnode.go

@@ -0,0 +1,40 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package yaml
+
+// MapNode wraps a field key and value.
+type MapNode struct {
+	Key   *RNode
+	Value *RNode
+}
+
+// IsNilOrEmpty returns true if the MapNode is nil,
+// has no value, or has a value that appears empty.
+func (mn *MapNode) IsNilOrEmpty() bool {
+	return mn == nil || mn.Value.IsNilOrEmpty()
+}
+
+type MapNodeSlice []*MapNode
+
+func (m MapNodeSlice) Keys() []*RNode {
+	var keys []*RNode
+	for i := range m {
+		if m[i] != nil {
+			keys = append(keys, m[i].Key)
+		}
+	}
+	return keys
+}
+
+func (m MapNodeSlice) Values() []*RNode {
+	var values []*RNode
+	for i := range m {
+		if m[i] != nil {
+			values = append(values, m[i].Value)
+		} else {
+			values = append(values, nil)
+		}
+	}
+	return values
+}