rebase: bump k8s.io/kubernetes from 1.26.2 to 1.27.2

Bumps [k8s.io/kubernetes](https://github.com/kubernetes/kubernetes) from 1.26.2 to 1.27.2.
- [Release notes](https://github.com/kubernetes/kubernetes/releases)
- [Commits](https://github.com/kubernetes/kubernetes/compare/v1.26.2...v1.27.2)

---
updated-dependencies:
- dependency-name: k8s.io/kubernetes
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/k8s.io/apiserver/pkg/util/flushwriter/writer.go

@@ -0,0 +1,53 @@
+/*
+Copyright 2014 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 flushwriter
+
+import (
+	"io"
+	"net/http"
+)
+
+// Wrap wraps an io.Writer into a writer that flushes after every write if
+// the writer implements the Flusher interface.
+func Wrap(w io.Writer) io.Writer {
+	fw := &flushWriter{
+		writer: w,
+	}
+	if flusher, ok := w.(http.Flusher); ok {
+		fw.flusher = flusher
+	}
+	return fw
+}
+
+// flushWriter provides wrapper for responseWriter with HTTP streaming capabilities
+type flushWriter struct {
+	flusher http.Flusher
+	writer  io.Writer
+}
+
+// Write is a FlushWriter implementation of the io.Writer that sends any buffered
+// data to the client.
+func (fw *flushWriter) Write(p []byte) (n int, err error) {
+	n, err = fw.writer.Write(p)
+	if err != nil {
+		return
+	}
+	if fw.flusher != nil {
+		fw.flusher.Flush()
+	}
+	return
+}