teach code generator about ugly fields

pkg/api/testing/applyconfiguration_test.go

@@ -180,6 +180,7 @@ func fuzzObject(t *testing.T, gvk schema.GroupVersionKind) runtime.Object {
 				c.FuzzNoCustom(s)
 				s.ManagedFields = nil
 				s.SelfLink = ""
+				s.ZZZ_DeprecatedClusterName = ""
 			},
 		).Fuzz(internalObj)
 

staging/src/k8s.io/code-generator/cmd/applyconfiguration-gen/generators/applyconfiguration.go

@@ -18,6 +18,7 @@ package generators
 
 import (
 	"io"
+	"strings"
 
 	"k8s.io/gengo/generator"
 	"k8s.io/gengo/namer"
@@ -131,6 +132,10 @@ func blocklisted(t *types.Type, member types.Member) bool {
 	if objectMeta.Name == t.Name && member.Name == "SelfLink" {
 		return true
 	}
+	// Hide any fields which are en route to deletion.
+	if strings.HasPrefix(member.Name, "ZZZ_") {
+		return true
+	}
 	return false
 }