### Other notable changes

* Restores --username and --password flags to kubectl ([#75451](https://github.com/kubernetes/kubernetes/pull/75451), [@liggitt](https://github.com/liggitt))
* Applies zone labels to vSphere Volumes and honors allowedTopologies when provisioning. ([#74654](https://github.com/kubernetes/kubernetes/pull/74654), [@subramanian-neelakantan](https://github.com/subramanian-neelakantan))

* Azure file persistent volumes can use a new `secretNamespace` field to reference a secret in a different namespace than the one containing their bound persistent volume claim. The azure file persistent volume provisioner honors a corresponding `secretNamespace` storage class parameter to determine where to place secrets containing the storage account key. ([#47660](https://github.com/kubernetes/kubernetes/pull/47660), [@rootfs](https://github.com/rootfs))

    `reduce_` ops.
*   Move `TensorForestEstimator` to `contrib/tensor_forest`.
*   Enable compiler optimizations by default and allow configuration in
    configure.
*   `tf.divide` now honors the name field.
*   Make metrics weight broadcasting more strict.
*   Add new queue-like `StagingArea` and new ops: `stage` and `unstage`.
*   Enable inplace update ops for strings on CPU. Speed up string concat.