Update k8s dependencies to v1.22.0-rc.0

vendor/google.golang.org/protobuf/reflect/protodesc/proto.go

@@ -9,6 +9,7 @@ import (
 	"strings"
 
 	"google.golang.org/protobuf/internal/encoding/defval"
+	"google.golang.org/protobuf/internal/strs"
 	"google.golang.org/protobuf/proto"
 	"google.golang.org/protobuf/reflect/protoreflect"
 
@@ -20,9 +21,11 @@ import (
 func ToFileDescriptorProto(file protoreflect.FileDescriptor) *descriptorpb.FileDescriptorProto {
 	p := &descriptorpb.FileDescriptorProto{
 		Name:    proto.String(file.Path()),
-		Package: proto.String(string(file.Package())),
 		Options: proto.Clone(file.Options()).(*descriptorpb.FileOptions),
 	}
+	if file.Package() != "" {
+		p.Package = proto.String(string(file.Package()))
+	}
 	for i, imports := 0, file.Imports(); i < imports.Len(); i++ {
 		imp := imports.Get(i)
 		p.Dependency = append(p.Dependency, imp.Path())
@@ -138,7 +141,14 @@ func ToFieldDescriptorProto(field protoreflect.FieldDescriptor) *descriptorpb.Fi
 		p.TypeName = fullNameOf(field.Message())
 	}
 	if field.HasJSONName() {
-		p.JsonName = proto.String(field.JSONName())
+		// A bug in older versions of protoc would always populate the
+		// "json_name" option for extensions when it is meaningless.
+		// When it did so, it would always use the camel-cased field name.
+		if field.IsExtension() {
+			p.JsonName = proto.String(strs.JSONCamelCase(string(field.Name())))
+		} else {
+			p.JsonName = proto.String(field.JSONName())
+		}
 	}
 	if field.Syntax() == protoreflect.Proto3 && field.HasOptionalKeyword() {
 		p.Proto3Optional = proto.Bool(true)