Update generated files under kyaml.

sed -i 's|version: v0.17.0|version: v0.19.8|' kyaml/yaml/internal/k8sgen/k8scopy.yaml
rm kyaml/yaml/internal/k8sgen/pkg/labels/zz_generated.deepcopy.go
(cd kyaml; make generate)

kyaml/yaml/internal/k8sgen/pkg/util/errors/errors.go

@@ -1,5 +1,5 @@
-// Code generated by k8scopy from k8s.io/apimachinery@v0.17.0; DO NOT EDIT.
-// Copied from k8s.io/apimachinery@v0.17.0/pkg/util/errors/errors.go
+// Code generated by k8scopy from k8s.io/apimachinery@v0.19.8; DO NOT EDIT.
+// File content copied from k8s.io/apimachinery@v0.19.8/pkg/util/errors/errors.go
 
 /*
 Copyright 2015 The Kubernetes Authors.
@@ -31,9 +31,14 @@ type MessageCountMap map[string]int
 
 // Aggregate represents an object that contains multiple errors, but does not
 // necessarily have singular semantic meaning.
+// The aggregate can be used with `errors.Is()` to check for the occurrence of
+// a specific error type.
+// Errors.As() is not supported, because the caller presumably cares about a
+// specific error of potentially multiple that match the given type.
 type Aggregate interface {
 	error
 	Errors() []error
+	Is(error) bool
 }
 
 // NewAggregate converts a slice of errors into an Aggregate interface, which
@@ -74,16 +79,17 @@ func (agg aggregate) Error() string {
 	}
 	seenerrs := sets.NewString()
 	result := ""
-	agg.visit(func(err error) {
+	agg.visit(func(err error) bool {
 		msg := err.Error()
 		if seenerrs.Has(msg) {
-			return
+			return false
 		}
 		seenerrs.Insert(msg)
 		if len(seenerrs) > 1 {
 			result += ", "
 		}
 		result += msg
+		return false
 	})
 	if len(seenerrs) == 1 {
 		return result
@@ -91,19 +97,33 @@ func (agg aggregate) Error() string {
 	return "[" + result + "]"
 }
 
-func (agg aggregate) visit(f func(err error)) {
+func (agg aggregate) Is(target error) bool {
+	return agg.visit(func(err error) bool {
+		return errors.Is(err, target)
+	})
+}
+
+func (agg aggregate) visit(f func(err error) bool) bool {
 	for _, err := range agg {
 		switch err := err.(type) {
 		case aggregate:
-			err.visit(f)
+			if match := err.visit(f); match {
+				return match
+			}
 		case Aggregate:
 			for _, nestedErr := range err.Errors() {
-				f(nestedErr)
+				if match := f(nestedErr); match {
+					return match
+				}
 			}
 		default:
-			f(err)
+			if match := f(err); match {
+				return match
+			}
 		}
 	}
+
+	return false
 }
 
 // Errors is part of the Aggregate interface.