rebase: update kubernetes dep to 1.24.0

As kubernetes 1.24.0 is released, updating
kubernetes dependencies to 1.24.0

updates: #3086

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

vendor/k8s.io/kube-openapi/pkg/internal/handler/handler_cache.go

@@ -0,0 +1,57 @@
+/*
+Copyright 2021 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 handler
+
+import (
+	"sync"
+)
+
+// HandlerCache represents a lazy cache for generating a byte array
+// It is used to lazily marshal OpenAPI v2/v3 and lazily generate the ETag
+type HandlerCache struct {
+	BuildCache func() ([]byte, error)
+	once       sync.Once
+	bytes      []byte
+	err        error
+}
+
+// Get either returns the cached value or calls BuildCache() once before caching and returning
+// its results. If BuildCache returns an error, the last valid value for the cache (from prior
+// calls to New()) is used instead if possible.
+func (c *HandlerCache) Get() ([]byte, error) {
+	c.once.Do(func() {
+		bytes, err := c.BuildCache()
+		// if there is an error updating the cache, there can be situations where
+		// c.bytes contains a valid value (carried over from the previous update)
+		// but c.err is also not nil; the cache user is expected to check for this
+		c.err = err
+		if c.err == nil {
+			// don't override previous spec if we had an error
+			c.bytes = bytes
+		}
+	})
+	return c.bytes, c.err
+}
+
+// New creates a new HandlerCache for situations where a cache refresh is needed.
+// This function is not thread-safe and should not be called at the same time as Get().
+func (c *HandlerCache) New(cacheBuilder func() ([]byte, error)) HandlerCache {
+	return HandlerCache{
+		bytes:      c.bytes,
+		BuildCache: cacheBuilder,
+	}
+}