Merge pull request #51321 from mengqiy/kubectl_apply_openapi

Automatic merge from submit-queue (batch tested with PRs 51321, 55969, 55039, 56183, 55976). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Kubectl apply and strategic merge patch using openapi

- [x] support openapi in strategic merge patch
- [x] test openapi in strategic merge patch
- [x] kubectl apply use openapi to calculate diff be default. It will fall back to use baked-in types when openapi is not available.
- [x] test openapi in kubectl apply

Fixes: kubernetes/kubectl#55

```release-note
kubectl apply use openapi to calculate diff be default. It will fall back to use baked-in types when openapi is not available.
```

/assign @apelisse

Kubernetes-commit: e412ad5393b8c949474b904616fc411c3aa478a9

vendor/k8s.io/apimachinery/pkg/util/strategicpatch/errors.go

@@ -0,0 +1,49 @@
+/*
+Copyright 2017 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 strategicpatch
+
+import (
+	"fmt"
+)
+
+type LookupPatchMetaError struct {
+	Path string
+	Err  error
+}
+
+func (e LookupPatchMetaError) Error() string {
+	return fmt.Sprintf("LookupPatchMetaError(%s): %v", e.Path, e.Err)
+}
+
+type FieldNotFoundError struct {
+	Path  string
+	Field string
+}
+
+func (e FieldNotFoundError) Error() string {
+	return fmt.Sprintf("unable to find api field %q in %s", e.Field, e.Path)
+}
+
+type InvalidTypeError struct {
+	Path     string
+	Expected string
+	Actual   string
+}
+
+func (e InvalidTypeError) Error() string {
+	return fmt.Sprintf("invalid type for %s: got %q, expected %q", e.Path, e.Actual, e.Expected)
+}