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Added JobTemplate, a preliminary step for ScheduledJob and Workflow

@sdminonne as promised, sorry it took this long 😊 
@erictune fyi though it does not have to be in for 1.2

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Fix bug in marshaling/unmarshaling Time in protobufs

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Openstack provider

Our pull request delivers solution to create Kubernetes cluster on the top of OpenStack. Heat OpenStack Orchestration engine describes the infrastructure for Kubernetes cluster. CentoOS images are used for Kubernetes host machines.

We tested our solution with DevStack and Citycloud provider.

We believe that our solution will fill the gap that which is on the market.

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copy ServerAddressByClientCIDR to federation types

#24016
copy ServerAddressByClientCIDR to federation types
update generated files

[![Analytics](https://kubernetes-site.appspot.com/UA-36037335-10/GitHub/.github/PULL_REQUEST_TEMPLATE.md?pixel)]()

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Small refactoring around drain - move drain logic to separate function.

cc: @piosz @fgrzadkowski 

Rename a function parameter name in authn.go

OS X: Fix hyperkube build by adding empty string to sed invocation

AWS kube-up: Allow VPC CIDR to be specified (experimental)

Changed docker storage driver to overlayfs

move shared annotations to new api/annotations package

Eviction proposal transition frequency

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Quota integration test improvements

This PR does the following:

* allow a replication manager to get created that does not record events
* improve the shutdown behavior of replication manager and resource quota to ensure doWork funcs exit properly
* update quota integration test to use non event generating replication manager, reduce number of pods to provision

I am hoping this combination of changes should fix the referenced flake.

Fixes https://github.com/kubernetes/kubernetes/issues/25037

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devel/ tree further minor edits

Address line wrap issue #1488. Also cleans up other minor editing issues in the docs/devel/* tree such as spelling errors, links, content tables...
Signed-off-by: Mike Brown <brownwm@us.ibm.com>

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Return 'too old' errors from watch cache via watch stream

Fixes #25151

This PR updates the API server to produce the same results when a watch is attempted with a resourceVersion that is too old, regardless of whether the etcd watch cache is enabled. The expected result is a `200` http status, with a single watch event of type `ERROR`. Previously, the watch cache would deliver a `410` http response.

This is the uncached watch impl:
```
// Implements storage.Interface.
func (h *etcdHelper) WatchList(ctx context.Context, key string, resourceVersion string, filter storage.FilterFunc) (watch.Interface, error) {
	if ctx == nil {
		glog.Errorf("Context is nil")
	}
	watchRV, err := storage.ParseWatchResourceVersion(resourceVersion)
	if err != nil {
		return nil, err
	}
	key = h.prefixEtcdKey(key)
	w := newEtcdWatcher(true, h.quorum, exceptKey(key), filter, h.codec, h.versioner, nil, h)
	go w.etcdWatch(ctx, h.etcdKeysAPI, key, watchRV)
	return w, nil
}
```

once the resourceVersion parses, there is no path that returns a direct error, so all errors would have to be returned as an `ERROR` event via the ResultChan().

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GKE provider: Add cluster-ipv4-cidr and arbitrary flags

cc @roberthbailey @a-robinson @cjcullen

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modify kubenet mutex and add timer

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remove extra quotation mark that breaks API docs

Finish #24099

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etcd3/watcher: Event.Object should have the same rev as etcd delete

### What's the problem?
When a delete is watched, the revision should be larger than any previous to guarantee ordering. However, currently etcd3 decodes the previous rev into returned object:

https://github.com/kubernetes/kubernetes/blob/995f022808d1407897a5b23373484ac683534390/pkg/storage/etcd3/watcher.go#L322

This will break, for example, cacher's assumption here if it re-watch.
https://github.com/kubernetes/kubernetes/blob/995f022808d1407897a5b23373484ac683534390/pkg/storage/cacher.go#L579-L581

The etcd2 impl. also takes the current ModifiedIndex to ensure it's a larger number:
https://github.com/kubernetes/kubernetes/blob/995f022808d1407897a5b23373484ac683534390/pkg/storage/etcd/etcd_watcher.go#L437-L442

### What's this PR?
It fixes above problem by using etcd's delete revision.

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kubenet try to retrieve ip inside pod net namespace

Kubenet currently stores the ips of pods inside a map. Kubelet gets pod ip from kubenet during syncpod. If Kubelet restarts, all pods on the node lost their ips in podStatus. This PR adds logic to retrieve pod IP from pod netns. 

cc: @yujuhong 

fix rollout nil panice issue

AWS kube-up: Increase timeout waiting for docker start

Quota integration test was not closing launched controllers

Update links for the user and troubleshooting guides for the build cop

cop to copy-paste from the oncall documentation.

instead of previous object's revision.

Adding extra logging in case of error.