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
Automatic merge from submit-queue (batch tested with PRs 54199, 54181, 54196). 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>.
Update openapi to use kube-openapi code
**What this PR does / why we need it**: OpenAPI code has moved to `github.com/kubernetes/kube-openapi`. Let's use that code as a dependency, since now it's duplicated.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#51823
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
No user visible changes. Just code moving around.
Kubernetes-commit: 507790c9c6f50b580b4409b5ac93b10a24570819
Automatic merge from submit-queue. 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>.
sample-controller: add example CRD controller
**What this PR does / why we need it**:
Adds a sample-controller example repository
fixes#52752
**Special notes for your reviewer**:
This is currently based on the sttts:sttts-codegen-scripts branch and should not be merged until that is (ref https://github.com/kubernetes/kubernetes/pull/52186)
**Release note**:
```
Add sample-controller repository
```
/cc @sttts @nikhita @colemickens
Kubernetes-commit: 9a7800f7d2efb88b397674672ac56f898826cf7c
