## Changes by Kind

### API Change

    * ACTION REQUIRED: The deprecated Kubelet flag `--allow-privileged` has been removed. Remove any use of `--allow-privileged` from your kubelet scripts or manifests.

### Other notable changes

* StatefulSet: Set hostname/subdomain fields on new Pods in addition to the deprecated annotations, to allow mitigation of Pod DNS issues upon upgrading to Kubernetes v1.7.x. ([#50942](https://github.com/kubernetes/kubernetes/pull/50942), [@enisoc](https://github.com/enisoc))
* Azure: Allow VNet to be in a separate Resource Group. ([#49725](https://github.com/kubernetes/kubernetes/pull/49725), [@sylr](https://github.com/sylr))

- 'Promoted `cronjob_job_creation_skew` metric to stable to follow the cronjob v2 controller,
  the following metrics had their name updated to match metrics API guidelines:
    - `cronjob_job_creation_skew_duration_seconds` -> `job_creation_skew_duration_seconds`.' ([#113008](https://github.com/kubernetes/kubernetes/pull/113008), [@soltysh](https://github.com/soltysh))

* Allow Cinder volume limit to be configured from node too ([#74542](https://github.com/kubernetes/kubernetes/pull/74542), [@gnufied](https://github.com/gnufied))
* Fix subnet annotation checking for Azure internal loadbalancer ([#74498](https://github.com/kubernetes/kubernetes/pull/74498), [@feiskyer](https://github.com/feiskyer))

- Switched intstr.Type to sized integer to follow API guidelines and improve compatibility with proto libraries ([#83956](https://github.com/kubernetes/kubernetes/pull/83956), [@liggitt](https://github.com/liggitt))

### Ephemeral Containers Graduate to Stable

  You can still access kubelet's `/healthz`, `/pods` and `/configz` by granting the caller `nodes/proxy` permission in RBAC but that also grants the caller permissions to exec, run and attach to containers on the nodes and doing so does not follow the least privilege principle. Granting callers more permissions than they need can give attackers an opportunity to escalate privileges. ([#126347](https://github.com/kubernetes/kubernetes/pull/126347), [@vinayakankugoyal](https://github.com/vinayakankugoyal))...

  The scheduling hints allow the scheduler to retry scheduling a Pod that was previously rejected by the CSILimit plugin if a deleted pod has a PVC from the same driver. ([#121508](https://github.com/kubernetes/kubernetes/pull/121508), [@utam0k](https://github.com/utam0k)) [SIG Scheduling and Storage]
- Kube-scheduler implements scheduling hints for the InterPodAffinity plugin.
  The scheduling hints allow the scheduler to retry scheduling a Pod

"server" field in the  /etc/kubernetes/kubelet.conf file. The subphase of "kubeadm join phase control-plane-join" called "etcd" is now deprecated, hidden and replaced by the subphase with identical functionality "etcd-join". "etcd" will be removed in a follow-up release. The subphase "kubelet-wait-bootstrap" of "kubeadm join" is no longer experimental and will always run. ([#134106](https://github.com/kubernetes/kubernetes/pull/134106), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]...