Automatic merge from submit-queue (batch tested with PRs 57902, 57958). 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>.
Add CustomResourceValidation example in sample-controller
Add `CustomResourceValidation` example in sample-controller.
Addresses the following part of https://github.com/kubernetes/sample-controller/issues/2:
> CRDs support json-schema schemas. These CRDs don't have them. It would be nice to show how to add them
**Release note**:
```release-note
NONE
```
/assign sttts munnerz
Kubernetes-commit: 51acead08489644d30b3f1a978e0b36f228d12a7
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>.
Bump rules_go and build "static" binaries in pure Go mode
**What this PR does / why we need it**: uses latest set of enhancements in bazelbuild/rules_go to properly build the "static" Go binaries using pure Go (i.e. `CGO_ENABLED=0`), and to support cross compilation of these binaries. Cross compilation of cgo-enabled binaries is still not supported.
Also depends on https://github.com/kubernetes/repo-infra/pull/52, and requires bazel 0.8+ (which is not yet enabled in CI for kubernetes/kubernetes).
Note that for proper cross compilation we'll also need to remove the hardcoded "linux-amd64" that's strewn about several `BUILD` files.
**Release note**:
```release-note
NONE
```
/hold
/assign @BenTheElder @mikedanese @spxtr
Kubernetes-commit: f5f6f3e715cb8dfbd9657a4229c77ec6a5eab135
Automatic merge from submit-queue (batch tested with PRs 56128, 56004, 56083, 55833, 56042). 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>.
Graduate the admission and admissionregistration (webhook part) API to v1beta1
ref: kubernetes/features#492
Most changes are mechanical. Please take a look at the commit message to see if the commit is worth reviewing.
```release-note
Action required:
The `admission/v1alpha1` API has graduated to `v1beta1`. Please delete your existing webhooks before upgrading the cluster, and update your admission webhooks to use the latest API, because the API has backwards incompatible changes.
The webhook registration related part of the `admissionregistration` API has graduated to `v1beta1`. Please delete your existing configurations before upgrading the cluster, and update your configuration file to use the latest API.
```
Kubernetes-commit: 4cafc5459bf987d2476efd0a4c17158a158887a3
Automatic merge from submit-queue (batch tested with PRs 55004, 54957). 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 kube-openapi to use validation
**What this PR does / why we need it**: Moves openapi validation code to kube-openapi, so that we can move the rest of the code to apimachinery repository, so that later we can use it from both the client and the server.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #Nothing
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Kubernetes-commit: 55e216f56eac0082acc6be655d9ae09cf9ba38a8
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
