Create staging folder for repo k8s.io/api, move external API used by client-go to k8s.io/api

Automatic merge from submit-queue (batch tested with PRs 47906, 47910)

Reduce scheduler CPU request to 75m

On a 1 cpu master we are over budget with CPU requests. Components like npd or cluster autoscaler don't have *any* space to run. We need to reduce some requests.

cc: @gmarek @mikedanese @roberthbailey @davidopp @dchen1107

Automatic merge from submit-queue

Decrese fluentd cpu request

Fix #47905

cc @piosz - this should fix your tests.
cc @dchen1107

manually fix hack/godep-save.sh

manually fix .linted_packages

squash, manually fix lint

manually fix hack/update-staging-godeps.sh

manually fix update-staging-godeps.sh; let it update godep of client-go

more manually fix pkg/api/v1 unit tests

change ImportPrefix

manually fix pkg/api unit tests

networking/v1/register.go
staging/src/k8s.io/kube-apiextensions-server/pkg/apis/apiextensions/v1alpha1/register.go
staging/src/k8s.io/metrics/pkg/apis/custom_metrics/v1alpha1/register.go
staging/src/k8s.io/metrics/pkg/apis/metrics/v1alpha1 register.go

    Don't revert, change boundingdirs in Makefile for deepcopy-gen

manually fix pkg/client/clientset_generated/clientset/typed/core/v1/pod_expansion.go because external policy types are moved now

Automatic merge from submit-queue

Add a spin-loop that waits for RBAC API's availability.

The very first thing that kubefed does when it comes up is run RBAC API discovery. We believe this sometimes fail on new clusters and as a result causes kubefed to assume that the RBAC API doesn't exist. Therefore, we are applying this workaround for now to ensure that the RBAC API is available before running kubefed.

Issue: #47737

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

/assign @csbell 

/cc @dchen1107 

/sig federation

revert before merge? remove a dependency from pkg/apis/componentconfig to clientset, probably we should fix it later. i removed the dependency to test if pkg/apis compile

move api/v1 to k8s.io/api/v1
duplicate some global variables/functions in pkg/api/v1/builder.go, add todo to remove these

Automatic merge from submit-queue

Add aleksandra-malinowska to cluster-autoscaler salt definition owners

@aleksandra-malinowska is working on Cluster Autoscaler so she should be added to reviewers and approvers.

Automatic merge from submit-queue

Reduce Cluster Autoscaler cpu request to 10m

We are super tight on 1 cpu master node. With the recent changes we cannot fit to the master if request is bigger than 10m. 

cc: @gmarek @MaciekPytel @aleksandra-malinowska

Automatic merge from submit-queue

Update addons with upstream CVE fixes

**What this PR does / why we need it**: refreshes the kube-dns, metadata-proxy, and fluentd-gcp, event-exporter, prometheus-to-sd, and ip-masq-agent addons with new base images containing fixes for the following vulnerabilities:
* CVE-2016-4448
* CVE-2016-9841
* CVE-2016-9843
* CVE-2017-1000366
* CVE-2017-2616
* CVE-2017-9526

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #47386 (yay!)

**Special notes for your reviewer**:

**Release note**:

```release-note
Update kube-dns, metadata-proxy, and fluentd-gcp, event-exporter, prometheus-to-sd, and ip-masq-agent addons with new base images containing fixes for CVE-2016-4448, CVE-2016-9841, CVE-2016-9843,  CVE-2017-1000366, CVE-2017-2616, and CVE-2017-9526.
```
/assign @bowei @MrHohn @Q-Lee @crassirostris @dnardo 
/cc @dchen1107 @timstclair