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/k8s.io/apimachinery/pkg/util/yaml/decoder.go

@@ -22,13 +22,11 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"strings"
 	"unicode"
 
 	jsonutil "k8s.io/apimachinery/pkg/util/json"
 
-	"k8s.io/klog/v2"
 	"sigs.k8s.io/yaml"
 )
 
@@ -215,16 +213,15 @@ type YAMLOrJSONDecoder struct {
 	bufferSize int
 
 	decoder decoder
-	rawData []byte
 }
 
 type JSONSyntaxError struct {
-	Line int
-	Err  error
+	Offset int64
+	Err    error
 }
 
 func (e JSONSyntaxError) Error() string {
-	return fmt.Sprintf("json: line %d: %s", e.Line, e.Err.Error())
+	return fmt.Sprintf("json: offset %d: %s", e.Offset, e.Err.Error())
 }
 
 type YAMLSyntaxError struct {
@@ -250,35 +247,18 @@ func NewYAMLOrJSONDecoder(r io.Reader, bufferSize int) *YAMLOrJSONDecoder {
 // provide object, or returns an error.
 func (d *YAMLOrJSONDecoder) Decode(into interface{}) error {
 	if d.decoder == nil {
-		buffer, origData, isJSON := GuessJSONStream(d.r, d.bufferSize)
+		buffer, _, isJSON := GuessJSONStream(d.r, d.bufferSize)
 		if isJSON {
 			d.decoder = json.NewDecoder(buffer)
-			d.rawData = origData
 		} else {
 			d.decoder = NewYAMLToJSONDecoder(buffer)
 		}
 	}
 	err := d.decoder.Decode(into)
-	if jsonDecoder, ok := d.decoder.(*json.Decoder); ok {
-		if syntax, ok := err.(*json.SyntaxError); ok {
-			data, readErr := ioutil.ReadAll(jsonDecoder.Buffered())
-			if readErr != nil {
-				klog.V(4).Infof("reading stream failed: %v", readErr)
-			}
-			js := string(data)
-
-			// if contents from io.Reader are not complete,
-			// use the original raw data to prevent panic
-			if int64(len(js)) <= syntax.Offset {
-				js = string(d.rawData)
-			}
-
-			start := strings.LastIndex(js[:syntax.Offset], "\n") + 1
-			line := strings.Count(js[:start], "\n")
-			return JSONSyntaxError{
-				Line: line,
-				Err:  fmt.Errorf(syntax.Error()),
-			}
+	if syntax, ok := err.(*json.SyntaxError); ok {
+		return JSONSyntaxError{
+			Offset: syntax.Offset,
+			Err:    syntax,
 		}
 	}
 	return err
@@ -363,6 +343,12 @@ func GuessJSONStream(r io.Reader, size int) (io.Reader, []byte, bool) {
 	return buffer, b, hasJSONPrefix(b)
 }
 
+// IsJSONBuffer scans the provided buffer, looking
+// for an open brace indicating this is JSON.
+func IsJSONBuffer(buf []byte) bool {
+	return hasJSONPrefix(buf)
+}
+
 var jsonPrefix = []byte("{")
 
 // hasJSONPrefix returns true if the provided buffer appears to start with