rebase: update kubernetes to v1.21.2

Updated kubernetes packages to latest release.
resizefs package has been included into k8s.io/mount-utils
package. updated code to use the same.

Updates: #1968

Signed-off-by: Rakshith R <rar@redhat.com>

vendor/github.com/moby/spdystream/README.md

@@ -0,0 +1,77 @@
+# SpdyStream
+
+A multiplexed stream library using spdy
+
+## Usage
+
+Client example (connecting to mirroring server without auth)
+
+```go
+package main
+
+import (
+	"fmt"
+	"github.com/moby/spdystream"
+	"net"
+	"net/http"
+)
+
+func main() {
+	conn, err := net.Dial("tcp", "localhost:8080")
+	if err != nil {
+		panic(err)
+	}
+	spdyConn, err := spdystream.NewConnection(conn, false)
+	if err != nil {
+		panic(err)
+	}
+	go spdyConn.Serve(spdystream.NoOpStreamHandler)
+	stream, err := spdyConn.CreateStream(http.Header{}, nil, false)
+	if err != nil {
+		panic(err)
+	}
+
+	stream.Wait()
+
+	fmt.Fprint(stream, "Writing to stream")
+
+	buf := make([]byte, 25)
+	stream.Read(buf)
+	fmt.Println(string(buf))
+
+	stream.Close()
+}
+```
+
+Server example (mirroring server without auth)
+
+```go
+package main
+
+import (
+	"github.com/moby/spdystream"
+	"net"
+)
+
+func main() {
+	listener, err := net.Listen("tcp", "localhost:8080")
+	if err != nil {
+		panic(err)
+	}
+	for {
+		conn, err := listener.Accept()
+		if err != nil {
+			panic(err)
+		}
+		spdyConn, err := spdystream.NewConnection(conn, true)
+		if err != nil {
+			panic(err)
+		}
+		go spdyConn.Serve(spdystream.MirrorStreamHandler)
+	}
+}
+```
+
+## Copyright and license
+
+Copyright 2013-2021 Docker, inc. Released under the [Apache 2.0 license](LICENSE).