* Many improvements to the upgrade process and other bug fixes

### SIG Instrumentation

As far as Sig Instrumentation, the major change in Kubernetes 1.11 is the deprecation of Heapster as part of ongoing efforts to move to the new Kubernetes monitoring model. Clusters still using Heapster for autoscaling should be migrated over to metrics-server and the custom metrics API. See the deprecation section for more information.

### SIG Network

### Action Required

* New GCE or GKE clusters created with `cluster/kube-up.sh` will not enable the legacy ABAC authorizer by default. If you would like to enable the legacy ABAC authorizer, export ENABLE_LEGACY_ABAC=true before running `cluster/kube-up.sh`. ([#51367](https://github.com/kubernetes/kubernetes/pull/51367), [@cjcullen](https://github.com/cjcullen))

### Other notable changes

		if arg.store {
			s.storeType(et, addr, arg.v, 0, true)
		} else {
			s.move(et, addr, arg.v)
		}
	}

	// The following deletions have no practical effect at this time
	// because state.vars has been reset by the preceding state.startBlock.
	// They only enforce the fact that these variables are no longer need in
	// the current scope.
	delete(s.vars, ptrVar)

                        multiple match conditions that should be ANDed together. \n
                        If no matches are specified, the default is a prefix path
                        match on \"/\", which has the effect of matching every HTTP
                        request. \n Proxy or Load Balancer routing configuration generated
                        from HTTPRoutes MUST prioritize matches based on the following

    * Action required: Before upgrading your Kubernetes clusters, double check if you had configured webhooks for cluster-scoped objects (e.g., nodes, persistentVolume), these webhooks will start to take effect. Delete/modify the configs if that's not desirable.

### Other notable changes

Lr=ep(),p1=/^('|")([^]*)\1$/,d1=Lr(function(){},"Assigning an attribute a value containing characters that might need to be escaped is deprecated. Call attribute.setValue() instead."),h1=Lr(function(){},"Assigning attr.quoted is deprecated and has no effect. Assign to attr.quoteMark instead."),m1=Lr(function(){},"Constructing an Attribute selector with a value without specifying quoteMark is deprecated. Note: The value should be unescaped now.");function la(i){var e=!1,t=null,r=i,n=r.match(p1);return...

- hyperkube: Use debian-hyperkube-base@v1.1.0 image
  
    A previous release built hyperkube using the debian-hyperkube-base@v1.0.0,
    which was updated to address a CVE in the CNI plugins.
    
    A side-effect of using this new image was that the networking packages
    (namely `iptables`) drifted from the versions used in the kube-proxy images.
  
    The following issues were filed on kube-proxy failures when using hyperkube:

- The insecure address flags `--address` and `--port` in kube-controller-manager have had no effect since v1.20 and are removed in v1.24. ([#106860](https://github.com/kubernetes/kubernetes/pull/106860), [@knight42](https://github.com/knight42))

        "properties": {
          "apiVersion": {

}

type http2pipeBuffer interface {
	Len() int
	io.Writer
	io.Reader
}

// setBuffer initializes the pipe buffer.
// It has no effect if the pipe is already closed.
func (p *http2pipe) setBuffer(b http2pipeBuffer) {
	p.mu.Lock()
	defer p.mu.Unlock()
	if p.err != nil || p.breakErr != nil {
		return
	}
	p.b = b
}