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Allow Secret & ConfigMap keys to contain caps, dots, and underscores

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Re: #23722

This makes loosens the regex used in in Secrets and ConfigMap,
in order to make environment variable style keys valid

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Give away my e2e tests.

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Fix bad Godeps.

These changes make the updated verify-godeps.sh in #29920 pass.

Fixes #29402.

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dockershim: Implement PodSandboxMethods

Only the last three commits are new. 

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Fix the allow-all example NetworkPolicy

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This is a bug fix, no release note required.

Fixes #28795

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Clone kubernetes/release into something other than /release due to conflict with /release.

It looks like $WORKSPACE is the root of the kubernetes clone.  I think ideally we'd move that down a level and allow subdirectories of different repos.  I think this may become the norm as we split things up further as well.  What do you think and how should we proceed here?  @ixdy @spxtr 

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GKE test-build-release: Actually do the build.

Multiple devs (myself included!) have experienced frustration with the fact that if `KUBERNETES_PROVIDER=gke` then `hack/e2e.go --build` doesn't actually do a build.

Are we actually relying on this behavior anywhere?

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allow watching old resources with kubectl

Right now, one can not watch a resource with kubectl whose resourceVersion is outside the etcd watch window.  Specifying resourceVersion=0 returns the current object, then watches from the current index.

This PR changes the logic to use resourceVersion=0, which will work regardless of the resourceVersion of the object, and discard the first event if --watch-only is specified.

@ncdc @aveshagarwal 

Revert "Modified influxdb petset to provision persistent  volume."

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[Garbage Collector] add e2e tests again

#27151 is reverted because gke didn't start correctly after it's merged (https://github.com/kubernetes/kubernetes/pull/27151#issuecomment-233030686).

The possible problem is the `unbound variable`, which is fixed in the second commit of this PR. However, I cannot verify if the PR will fail the gke suite since I don't have the environment to run that suite.

@wojtek-t @lavalamp 

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Update test-owners with new tests, add catch-all assignment to test-infra team.

We will triage any additional failures, since they're more likely to be infra related. If they're not, they can always be reassigned (and the owners list can be updated!)

/cc @kubernetes/test-infra-maintainers 

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discovery: Adding a discover based RESTMapper

Added a PriorityRESTMapper that operates off of discovery information. I
made an auxiliary data type and function to help collect and organize
the information.

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azure: kube-up respects AZURE_RESOURCE_GROUP

This fixes #28482.

* declare AZKUBE_ variables as global to workaround lack of bash support for exporting array variables

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Modified influxdb petset to provision persistent  volume.


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[WIP] Modified influxdb petset to create claim.

fix hack/test-cmd

Added a PriorityRESTMapper that operates off of discovery information. I
made an auxiliary data type and function to help collect and organize
the information.

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Allow service names up to 63 characters (RFC 1035)

fixes #3752

adding a simple e2e test

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Retry Node updates in e2e tests

Fix #29516

Ref. https://github.com/kubernetes/kubernetes/issues/27655#issuecomment-235940057

cc @kevin-wangzefeng @wojtek-t 

Revert "[Federation] Downsize the release binary distribution."

Modified influxdb petset to provision pv.

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Change eviction logic in NodeController and make it Zone-aware

Ref. #28832

This PR changes the behavior of the NodeController. From now on 

```release-note
Change eviction policies in NodeController:
- add a "partialDisruption" mode, when more than 33% of Nodes in the zone are not Ready
- add "fullDisruption" mode, when all Nodes in the zone are not Ready

Eviction behavior depends on the mode in which NodeController is operating:
- if the new state is "partialDisruption" or "fullDisruption" we call a user defined function that returns a new QPS to use (default 1/10 of the default rate, and the default rate respectively),
- if the new state is "normal" we resume normal operation (go back to default limiter settings),
- if all zones in the cluster are in "fullDisruption" state we stop all evictions.
```

cc @wojtek-t @smarterclayton @davidopp 

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improve iptables-restore implementation #27559

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fixes #27559
- improve restoreInternal implementation in iptables
- add SetStdin and SetStdout functions to Cmd interface
- modify kubelet/prober and some tests in order to work with Cmd interface

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Fix usage of namespace shared informers in existing admission controllers

Fixes https://github.com/kubernetes/kubernetes/issues/29473

/cc @liggitt @ncdc 

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Create client from API version passed in config or use default

When creating a client read the `GroupVersion` value passed in the `restclient.Config`. If the passed `GroupVersion` does not match current group or is not enabled fallback to default `GroupVersion` for that group.

This PR should allow accessing `ScheduledJob` properly in `batch/v2alpha1`.

@smarterclayton @deads2k @caesarxuchao @lavalamp ptal

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Node E2E: Add serial jenkins job.

This PR added a jenkins job for serial test. It will run all serial test one by one.

This will be useful for https://github.com/kubernetes/kubernetes/pull/29809.

@coufon @yujuhong @dchen1107 
/cc @kubernetes/sig-node 

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Kubelet: add fake kube runtime

Add a new fake kube runtime with kubelet using the new runtime API.

CC @yujuhong @Random-Liu 

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Modified etcd manifest to support clustering.

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update node controller to use shared pod informer

continuing work from #24470 and #23575