rebase: update k8s.io packages to v0.29.0

Signed-off-by: Niels de Vos <ndevos@ibm.com>

vendor/k8s.io/apiserver/pkg/endpoints/handlers/metrics/metrics.go

@@ -18,7 +18,10 @@ package metrics
 
 import (
 	"context"
+	"sync"
+
 	"k8s.io/component-base/metrics"
+	"k8s.io/component-base/metrics/legacyregistry"
 )
 
 type RequestBodyVerb string
@@ -35,8 +38,8 @@ var (
 	RequestBodySizes = metrics.NewHistogramVec(
 		&metrics.HistogramOpts{
 			Subsystem: "apiserver",
-			Name:      "request_body_sizes",
-			Help:      "Apiserver request body sizes broken out by size.",
+			Name:      "request_body_size_bytes",
+			Help:      "Apiserver request body size in bytes broken out by resource and verb.",
 			// we use 0.05 KB as the smallest bucket with 0.1 KB increments up to the
 			// apiserver limit.
 			Buckets:        metrics.LinearBuckets(50000, 100000, 31),
@@ -46,6 +49,15 @@ var (
 	)
 )
 
+var registerMetrics sync.Once
+
+// Register all metrics.
+func Register() {
+	registerMetrics.Do(func() {
+		legacyregistry.MustRegister(RequestBodySizes)
+	})
+}
+
 func RecordRequestBodySize(ctx context.Context, resource string, verb RequestBodyVerb, size int) {
 	RequestBodySizes.WithContext(ctx).WithLabelValues(resource, string(verb)).Observe(float64(size))
 }