* Flush conntrack state for removed/changed UDP Services ([#22573](https://github.com/kubernetes/kubernetes/pull/22573), [@freehan](https://github.com/freehan))
* Allow setting the Host header in a httpGet probe ([#24292](https://github.com/kubernetes/kubernetes/pull/24292), [@errm](https://github.com/errm))

  and removed `--short` flag entirely. ([#116720](https://github.com/kubernetes/kubernetes/pull/116720), [@soltysh](https://github.com/soltysh))
- Kube-controller-manager deprecate `--volume-host-cidr-denylist` and `--volume-host-allow-local-loopback` flags. ([#118128](https://github.com/kubernetes/kubernetes/pull/118128), [@carlory](https://github.com/carlory)) [SIG API Machinery, Apps, Network, Node, Storage and Testing]

* change azure disk host cache to ReadOnly by default ([#72229](https://github.com/kubernetes/kubernetes/pull/72229), [@andyzhangx](https://github.com/andyzhangx))

      client.newBuilder()
        .addNetworkInterceptor(
          Interceptor { chain: Interceptor.Chain? ->
            val request =
              chain!!.request().newBuilder()
                .header("Host", "privateobject.com")
                .build()
            chain.proceed(request)
          },
        )
        .build()
    server.enqueue(MockResponse())

- Removed deprecated command flags --volume-host-cidr-denylist
  and --volume-host-allow-local-loopback from kube-controller-manager.
   ([#124017](https://github.com/kubernetes/kubernetes/pull/124017), [@carlory](https://github.com/carlory)) [SIG API Machinery, Apps, Cloud Provider and Storage]

	// Handle policy mapping removal.
	if policy == "" {
		if store.getUsersSysType() == LDAPUsersSysType {
			// Add a fallback removal towards previous content that may come back
			// as a ghost user due to lack of delete, this change occurred
			// introduced in PR #11840
			store.deleteMappedPolicy(ctx, name, regUser, false)
		}
		err := store.deleteMappedPolicy(ctx, name, userType, isGroup)

		Description:    "Your metadata headers are not supported.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrUnsupportedHostHeader: {
		Code:           "InvalidArgument",
		Description:    "Your Host header is malformed.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrObjectTampered: {
		Code:           "XMinioObjectTampered",
		Description:    errObjectTampered.Error(),

*   DeviceFactory's AddDevices and CreateDevices functions now return a Status
    instead of void.
*   Int32 elements of list(type) arguments are no longer placed in host memory
    by default. If necessary, a list(type) argument to a kernel can be placed in
    host memory using a HostMemory annotation.
*   `uniform_unit_scaling_initializer()` no longer takes a `full_shape` arg,

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* Implement CanMount() for gfsMounter for linux ([#36686](https://github.com/kubernetes/kubernetes/pull/36686), [@rkouj](https://github.com/rkouj))
* Better messaging for missing volume binaries on host ([#36280](https://github.com/kubernetes/kubernetes/pull/36280), [@rkouj](https://github.com/rkouj))
* fix mesos unit tests ([#38196](https://github.com/kubernetes/kubernetes/pull/38196), [@deads2k](https://github.com/deads2k))