* Notes on LB name:
    * to ensure backword and forward compat:
    * - SingleStack -v4 (pre v1.16) => BackendPool name == clusterName
    * - SingleStack -v6 => BackendPool name == clusterName (all cluster bootstrap uses this name)
    * DualStack:
    * => IPv4 BackendPool name == clusterName
    * => IPv6 BackendPool name == <clusterName>-IPv6
    * This result into:

             labels:
               kubernetes.io/cluster-service: "true"
             name: system:azure-cloud-provider
           roleRef:
             apiGroup: rbac.authorization.k8s.io
             kind: ClusterRole
             name: system:azure-cloud-provider
           subjects:
           - kind: ServiceAccount
             name: azure-cloud-provider
             namespace: kube-system
    ```

- The `NamespaceDefaultLabelName` is promoted to GA in this release. All Namespace API objects have a `kubernetes.io/metadata.name` label matching their `metadata.name` field to allow selecting any `namespace` by its name using a label selector. ([#101342](https://github.com/kubernetes/kubernetes/pull/101342), [@rosenhouse](https://github.com/rosenhouse))

- The cloud config for Azure cloud provider can now be initialized from Kubernetes secret azure-cloud-provider in kube-system namespace
    - the secret is a serialized version of `azure.json` file with key cloud-config. And the secret name is azure-cloud-provider.

- Namespace API objects now have a `kubernetes.io/metadata.name` label matching their metadata.name field to allow selecting any namespace by its name using a label selector. ([#96968](https://github.com/kubernetes/kubernetes/pull/96968), [@jayunit100](https://github.com/jayunit100)) [SIG API Machinery, Apps, Cloud Provider, Storage and Testing]

### Feature

- ACTION REQUIRED : In CoreDNS v1.7.0, [metrics names have been changed](https://github.com/coredns/coredns/blob/master/notes/coredns-1.7.0.md#metric-changes) which will be backward incompatible with existing reporting formulas that use the old metrics' names. Adjust your formulas to the new names before upgrading. 
  
  Kubeadm now includes CoreDNS version v1.7.0. Some of the major changes include:

- Metric names for CSI and flexvolume drivers will include the driver name as well as the CSI plugin name. ([#96474](https://github.com/kubernetes/kubernetes/pull/96474), [@mattcary](https://github.com/mattcary)) [SIG Instrumentation and Storage]

### Scheduling
* **Multiple schedulers**
  * Modify your PodSpecs that currently use the `scheduler.alpha.kubernetes.io/name` annotation on Pod, to instead use the `schedulerName` field in the PodSpec.
  * Modify any custom scheduler(s) you have written so that they read the `schedulerName` field on Pod instead of the `scheduler.alpha.kubernetes.io/name` annotation.

    * The same new ID generation applies to response models.
    * This also changes the generated title for those models.
    * Only composite bodies and response models are affected because those are generated dynamically, they don't have a module (a Python file).

### CLI Improvements
- The kubectl's api-resource command now has a `--sort-by` flag to sort resources by name or kind. ([#81971](https://github.com/kubernetes/kubernetes/pull/81971), [@laddng](https://github.com/laddng))
- A new `--prefix` flag added into kubectl logs which prepends each log line with information about it's source (pod name and container name) ([#76471](https://github.com/kubernetes/kubernetes/pull/76471), [@m1kola](https://github.com/m1kola))