* Improve monitoring and error reporting

#### Container Runtime Interface (CRI)

* [alpha] Add a CRI validation test suite and CRI command-line tools. ([#292](https://github.com/kubernetes/enhancements/issues/292), [@feiskyer](https://github.com/feiskyer))

* [stable] [cri-o](https://github.com/kubernetes-incubator/cri-o): CRI implementation for OCI-based runtimes [[@mrunalp](https://github.com/mrunalp)]

### Bug or Regression

- Updated the CRI-O socket path, so users who configure kubelet to use a location like `/run/crio/crio.sock` don't see strange behaviour from CRI stats provider. ([#118704](https://github.com/kubernetes/kubernetes/pull/118704), [@dgl](https://github.com/dgl))

- Kubeadm: Switched kubeadm to start using the CRI client library instead of shelling out of the `crictl` binary
  for actions against a CRI endpoint. The kubeadm deb/rpm packages will continue to install the `cri-tools`
  package for one more release, but in you must adapt your scripts to install `crictl` manually from
  https://github.com/kubernetes-sigs/cri-tools/releases or a different location.
  

  - `PodStatus.ResourcesAllocated` describes node resources allocated to Pod.
  - `PodStatus.Resources` describes node resources applied to running containers by CRI.
  - `UpdateContainerResources` CRI API now supports both Linux and Windows. ([#102884](https://github.com/kubernetes/kubernetes/pull/102884), [@vinaykul](https://github.com/vinaykul))

- Bumped `KubeletCgroupDriverFromCRI` to GA and add metric to track out-of-support CRI implementations. ([#133157](https://github.com/kubernetes/kubernetes/pull/133157), [@haircommander](https://github.com/haircommander)) [SIG Node and Testing]

- Moved `k8s.io/kubernetes/pkg/kubelet/cri/streaming` package to `k8s.io/kubelet/pkg/cri/streaming`. ([#118253](https://github.com/kubernetes/kubernetes/pull/118253), [@saschagrunert](https://github.com/saschagrunert)) [SIG Node, Release and Security]

- Extended ContainerStatus CRI API to allow runtime response with container resource requests and limits that are in effect.
  - UpdateContainerResources CRI API now supports both Linux and Windows. ([#111645](https://github.com/kubernetes/kubernetes/pull/111645), [@vinaykul](https://github.com/vinaykul))

   ([#121912](https://github.com/kubernetes/kubernetes/pull/121912), [@JoelSpeed](https://github.com/JoelSpeed))
- Allowed container runtimes to fix an image garbage collection bug by adding an `image_id` field to the CRI Container message.
   ([#123508](https://github.com/kubernetes/kubernetes/pull/123508), [@saschagrunert](https://github.com/saschagrunert))

- kubeadm: if the `NodeLocalCRISocket` feature gate is enabled, remove the `kubeadm.alpha.kubernetes.io/cri-socket` annotation from a given node on `kubeadm upgrade`. ([#129279](https://github.com/kubernetes/kubernetes/pull/129279), [@HirazawaUi](https://github.com/HirazawaUi)) [SIG Cluster Lifecycle and Testing]