BoostedTreesRegressor.
*   Add 3rd generation pipeline config for Cloud TPUs which improves performance
    and usability.
*   `tf.contrib.bayesflow` is moving out to it's own repo.
*   Added `tf.contrib.{proto,rpc}` to allow generic proto parsing and RPC
    communication<sup>[1](#rpc-issue)</sup>.

## Bug Fixes and Other Changes

*   `tf.data`:
    *   Add `tf.contrib.data.prefetch_to_device`, which enables prefetching

,"delay","time","timeout","clearTimeout","checkOn","optSelected","radioValue","boolHook","removeAttr","nType","attrHooks","attrNames","getter","lowercaseName","rfocusable","rclickable","stripAndCollapse","getClass","classesToArray","removeProp","propFix","tabindex","for","class","addClass","classNames","curValue","finalValue","removeClass","toggleClass","stateVal","isValidValue","hasClass","rreturn","valHooks","optionSet","rquery","parseXML","parserErrorElem","DOMParser","parseFromString","rfocu...

- Kubeadm: during execution of the "check expiration" command, treat the etcd CA as external if there is a missing etcd CA key file (etcd/ca.key) and perform the proper validation on certificates signed by the etcd CA. Additionally, make sure that the CA for all entries in the output table is included - for both certificates on disk and in kubeconfig files. ([#106924](https://github.com/kubernetes/kubernetes/pull/106924),...

- Kubeadm: avoid panicing if the user has malformed the kubeconfig in the cluster-info config map to not include a valid current context. Include proper validation at the appropriate locations and throw errors instead. ([#134715](https://github.com/kubernetes/kubernetes/pull/134715), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]

- Kubelet is no longer able to recover from device manager state file older than 1.20. If the proper recommended upgrade flow is followed, there should be no issue. ([#123398](https://github.com/kubernetes/kubernetes/pull/123398), [@ffromani](https://github.com/ffromani)) [SIG Node and Testing]

var(--#{$prefix}dropdown-padding-y) var(--#{$prefix}dropdown-padding-x);\n  margin: 0; // Override default margin of ul\n  @include font-size(var(--#{$prefix}dropdown-font-size));\n  color: var(--#{$prefix}dropdown-color);\n  text-align: left; // Ensures proper alignment if parent has it changed (e.g., modal footer)\n  list-style: none;\n  background-color: var(--#{$prefix}dropdown-bg);\n  background-clip: padding-box;\n  border: var(--#{$prefix}dropdown-border-width) solid var(--#{$prefix}dropdown-border-color);\n...

* the resource quota controller was not adding quota to be resynced at proper interval ([#45685](https://github.com/kubernetes/kubernetes/pull/45685), [@derekwaynecarr](https://github.com/derekwaynecarr))

* Adds optional group and version information to the discovery interface, so that if an endpoint uses non-default values, the proper value of "kind" can be determined. Scale is a common example. ([#49971](https://github.com/kubernetes/kubernetes/pull/49971), [@deads2k](https://github.com/deads2k))

* Adds optional group and version information to the discovery interface, so that if an endpoint uses non-default values, the proper value of "kind" can be determined. Scale is a common example. ([#49971](https://github.com/kubernetes/kubernetes/pull/49971), [@deads2k](https://github.com/deads2k))

- Kubeadm: avoid panicing if the user has malformed the kubeconfig in the cluster-info config map to not include a valid current context. Include proper validation at the appropriate locations and throw errors instead. ([#134724](https://github.com/kubernetes/kubernetes/pull/134724), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]