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add ProxyModeIPVS in proxy mode validation

**What this PR does / why we need it**:
Currently didn't add "ipvs" in proxy mode check, then if we use "ipvs" mode, will get this error:
'error: KubeProxyConfiguration.Mode.ProxyMode: Invalid value: "ipvs": must be userspace,iptables or blank (blank means the best-available proxy (currently iptables)'
So I added it. 

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:

**Release note**:
```release-note
NONE
```

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expose a kube-up environment variable to override GLBC image

```release-note
NONE
```

This change allows kube-up to bring up a k8s cluster with specified glbc image other than the default one.

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add user-specified  ns to --dry-run created obj

Fixes https://github.com/kubernetes/kubernetes/issues/51068

**Release note**:
```release-note
NONE
```

Includes a namespace in a created resource's metadata when `--dry-run` is used if:
- a namespace was explicitly set by the user (via `--namespace`)
- No errors occur accessing the object's metadata

cc @fabianofranz @deads2k

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fix bug in admission test

tiny bug fix

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Clean up some service related description

**What this PR does / why we need it**:
As per the review comment https://github.com/kubernetes/kubernetes/pull/47250#discussion_r121162426, send this cleanup PR.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:
since this is minor cleanup, there is no related issue. see https://github.com/kubernetes/kubernetes/pull/47250#discussion_r121162426

**Release note**:

```release-note
NONE
```

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remove useless allocation of map

This one-element map is only used for checking api. Remove it and
simplify the code.

**Release note**:
```
NONE
```

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Replace storage-class annotations with field in examples

**What this PR does / why we need it**:
storage class is already GA. Replace annotations with field `StorageClassName` in examples.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #51435 (update: thanks @gyliu513 for the issue)
ref: https://github.com/kubernetes/kubernetes/pull/50654#discussion_r134954171

**Special notes for your reviewer**:
We may also want to remove the beta annotations in 1.8 since the field will have already been in two releases. If @kubernetes/sig-storage-api-reviews confirm this, I'd like to help remove it.

/cc @liggitt @jsafrane @msau42 

**Release note**:

```release-note
NONE
```

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bazel cleanup: remove --incompatible workaround flags

**What this PR does / why we need it**: since #53839 bumped all of our dependencies, we no longer need to use these workaround flags to support building with bazel 0.6.0+.

**Release note**:

```release-note
NONE
```

/assign @BenTheElder @spxtr @mikedanese

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split up large rest handling file

These are nothing but exact block moves because the giant rest.go made it really hard to find anything.

@kubernetes/sig-api-machinery-pr-reviews 

/assign sttts
/assign caesarxuchao

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Revert "kube-dns-anti-affinity: kube-dns never-co-located-in-the-same-node"

Reverts kubernetes/kubernetes#52193

As this has slowed down scheduling of kube-dns pods significantly (fixes https://github.com/kubernetes/kubernetes/issues/54164)

/cc @bowei @MrHohn @StevenACoffman

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apiextensions: fix LastTransitionTime for NamesAccepted condition

Fixes #54148. 

Without this change, `LastTransitionTime` for the NamesAccepted condition for CRDs always showed up as `null`.

**Release note**:

```release-note
NONE
```

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fix error print for admission test

**What this PR does / why we need it**:
fix error print to make them easy to inspect.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
NONE
**Special notes for your reviewer**:
NONE
**Release note**:

```release-note
NONE
```

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Fix RC/RS conversion

This fixes some round-trip information loss when representing an RC as an RS. I want to use these conversions in #49429 to eliminate the maintenance burden of duplicated RC code.

@kubernetes/sig-apps-pr-reviews

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allow fail close webhook admission

Webhook admission needs to allow failing closed.  Even in an alpha state, I don't want to be one DDOS away from having an exposed cluster.

/assign caesarxuchao
/assign sttts

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allow */subresource in rbac policy rules

xref #29698
xref #38756
xref #49504
xref #38810

Allow `*/subresource` format in RBAC policy rules to support polymorphic subresources like `*/scale` for HPA.

@DirectXMan12 fyi

```release-note
RBAC PolicyRules now allow resource=`*/<subresource>` to cover `any-resource/<subresource>`.   For example, `*/scale` covers `replicationcontroller/scale`.
```

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Fix typo in function name.

Also remove a superfluous comment.

**Release note**:
```release-note
NONE
```

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Fix #43583 (kubenet: remove code forcing bridge MAC address)

**What this PR does / why we need it**:
*kubenet: remove code forcing bridge MAC address*

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #43583 

**Special notes for your reviewer**:

**Release note**:

```release-note
```

cc @dcbw @freehan

Without this change, `LastTransitionTime` for the NamesAccepted
condition always showed up as `null`.

It makes sense to set the timestamp in `SetCRDCondition` instead of
setting it explicitly elsewhere.

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decode admission responses into a fresh object

Something about the way the admission request object is built causes decoding into back into it to fail with 

```
W1013 14:10:42.457423    2960 admission.go:185] rejected by webhook namespacereservations.admission.online.openshift.io/apis/admission.online.openshift.io/v1alpha1/namespacereservations &{%!t(string=namespacereservations.admission.online.openshift.io/apis/admission.online.openshift.io/v1alpha1/namespacereservations) %!t(*errors.errorString=&{reflect.Value.Addr of unaddressable value})}: failed calling admission webhook "namespacereservations.admission.online.openshift.io/apis/admission.online.openshift.io/v1alpha1/namespacereservations": reflect.Value.Addr of unaddressable value
```

This simply creates a fresh object to decode into, which works fine for our usage and makes it possible to actually have the webhook call out to something.

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Delete the redundant parameter flag

What this PR does / why we need it:

  Delete redundant parameter flag, otherwise the log will be show like:

  Warning: path "/var/lib/kubelet/pods/3c6c4869-4d02-11e7-9685-fa163eeda0fa/volumes" does not exist: %!q(MISSING)

  thank you!

The `out` parameter in Convert_map_to_unversioned_LabelSelector was
being ignored.

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Bump cluster autoscaler to 1.0.1-beta1

Contains fixes around scale from 0 and node autoprovisioning.

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pkg/api: extract Scheme/Registry/Codecs into pkg/api/legacyscheme

This serves as

- a preparation for the pkg/api->pkg/apis/core move
- and makes the dependency to the scheme explicit when vizualizing
  left depenncies.

The later helps with our our efforts to split up the monolithic repo
into self-contained sub-repos, e.g. for kubectl, controller-manager
and kube-apiserver in the future.

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Updated cluster/addons readme to match and point to docs

**What this PR does / why we need it**:

Reading the documents in the codebase lead some to think this method was current. But, according to the docs in the docs this is legacy. The updated readme is an attempt to keep the docs and codebase consistent.

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Add pod related conformance annotations
Signed-off-by: Brad Topol <btopol@us.ibm.com>


/sig testing
/area conformance
@sig-testing-pr-reviews

This PR adds pod related conformance annotations to the e2e test suite.

The PR fixes a portion of #53822.  It focuses on adding conformance annotations as defined by the Kubernetes Conformance Workgroup for a subset of the pod based e2e conformance tests. 
**Special notes for your reviewer**:
Please see https://docs.google.com/spreadsheets/d/1WWSOqFaG35VmmPOYbwetapj1VPOVMqjZfR9ih5To5gk/edit#gid=62929400
for the list of SIG Arch approved test names and descriptions that I am using.
**Release note**:

```release-note NONE
```

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add deads to admission owners

/assign derekwaynecarr

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Ensure network policy conversion round trips nil from field

xref https://github.com/kubernetes/kubernetes/issues/53906

```release-note
NONE
```

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Upgrade to go1.9

**What this PR does / why we need it**:
Upgrade to go1.9. Upgrading is good. It's "the best golang release ever"!

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #49484

**Special notes for your reviewer**:

**Release note**:

```release-note
Upgrade to go1.9
```

/assign @luxas @ixdy @wojtek-t