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Fix an issue about generation of secret key with invalid key size in gce

Replace /dev/random to /dev/urandom to avoid generation of secret key with invalid key size.



**What this PR does / why we need it**:
In GCE env, AESGCM encryption of secrets by default generates a secret key with /dev/random which sometime generates a key with invalid size.
This cause the cluster/kube-up.sh to fail in gce environment.

This PR replaces /dev/random with  /dev/urandom to have a secret key generated consistently with right size.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #67091

**Special notes for your reviewer**:

**Release note**:

```release-note
cluster/gce: generate consistent key sizes in config-default.sh using /dev/urandom instead of /dev/random  
```

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Fix csi attach limit

Add support for volume limits for CSI.

xref: https://github.com/kubernetes/community/pull/2051

```release-note
Add support for volume attach limits for CSI volumes
```

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CSI: skip attach for non-attachable drivers

**What this PR does / why we need it**:
This is implementation of https://github.com/kubernetes/community/pull/2523. CSI volumes that don't need attach/detach now don't need external attacher running.

WIP:
 * contains #67803 to get CSIDriver API. Ignore the first commit.
 * ~~missing e2e test~~

/sig storage

cc: @saad-ali @vladimirvivien @verult @msau42 @gnufied @davidz627 

**Release note**:
```release-note
CSI volume plugin does not need external attacher for non-attachable CSI volumes.
```

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Dynamic RuntimeClass implementation

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

Implement RuntimeClass using the dynamic client to break the dependency on https://github.com/kubernetes/kubernetes/pull/67791

Once (if) https://github.com/kubernetes/kubernetes/pull/67791 merges, I will migrate to the typed client.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
For https://github.com/kubernetes/features/issues/585

**Release note**:
Covered by #67737
```release-note
NONE
```

/sig node
/kind feature
/priority important-soon
/milestone v1.12

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Replace git volume with configmap in emptydir wrapper conflict test

**What this PR does / why we need it**: GitRepoVolumeSource is deprecated, use a ConfigMap instead. (This test is part of the conformance suite, so it would be good to allow downstreams to disable/not support gitRepo)

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

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

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Register RuntimeClass CRD as an addon

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

Register the RuntimeClass CRD when the RuntimeClass feature gate is enabled. This is done in through the addon manager.

This is an alternative approach to https://github.com/kubernetes/kubernetes/pull/67924

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
For https://github.com/kubernetes/features/issues/585

**Release note**:
Covered by #67737
```release-note
NONE
```

/sig node
/kind feature
/priority important-soon
/milestone v1.12

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KubeletPluginsWatcher feature is beta in 1.12 release

*What this PR does / why we need it:*
Graduates DevicePlugins feature to beta.

*Which issue(s) this PR fixes:*
Related but does not fix: https://github.com/kubernetes/features/issues/595 as well as https://github.com/kubernetes/kubernetes/issues/65773

*Special notes for your reviewer:*
Includes upgrading the gRPC pluginwatcher API to beta. Based on the [device plugin model](https://github.com/kubernetes/kubernetes/pull/59588).

*Depends on https://github.com/kubernetes/kubernetes/pull/64621 being merged* 

Release note:

```release-note
KubeletPluginsWatcher feature graduates to beta.
```

/sig node
/sig storage

/cc @vladimirvivien @sbezverk @vikaschoudhary16 @saad-ali @vishh @jiayingz

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fix typo in ipvs RADME.md

**What this PR does / why we need it**:
fix typos in  ipvs README.md
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:
  no
**Release note**:

```release-note

```

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Implement semantic comparison of VolumeNodeAffinity for unit tests

**What this PR does / why we need it**:
Implements a semantic comparison function for VolumeNodeAffinity that is not sensitive to ordering of various members. Previous reflect.DeepEqual was sensitive to ordering causing it to be flaky.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes # https://github.com/kubernetes/kubernetes/issues/67852

**Special notes for your reviewer**:
We want to able to successfully match `VolumeNodeAffinity{Required:&NodeSelector{NodeSelectorTerms:[{[{a In [1]} {b In [2 3]}] []}],},}` and `VolumeNodeAffinity{Required:&NodeSelector{NodeSelectorTerms:[{[{b In [3 2]} {a In [1]}] []}],},}` without being sensitive to the ordering of requirements with key `a` and `b` or the order of values with key `b`. This fix enables such semantic comparison of VolumeNodeAffinity

We can move `volumeNodeAffinitiesEqual` to volume/utils post code freeze

**Release note**:

```release-note
NONE
```

/sig storage
cc @msau42

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Add yue9944882 as subproject reviewer (core admission/apiserver)

extend reviewer bandwidth 😃am a super careful reviewer

i had contributed series of refactors for core admission controllers and apiserver launch flow. 

/assign @deads2k 

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions here: https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md.

Deprecation notice of the storage-versions flag

This PR deprecates the `--storage-versions` flag of kube-apiserver. The flag allows user to change the API version the content in etcd will be serialized to.

The flag provides unnecessary flexibility, with the side-effect of making kube-apiserver upgrades/downgrades hard to reason about. Specifically, Kubernetes follows the 4-step API version deprecation [policy](https://kubernetes.io/docs/reference/using-api/deprecation-policy/), which makes upgrades/downgrades across minor versions safe as long as all the data in etcd is encoded to the default storage versions. However, if users can specify their own storage versions, then the safety of each upgrade/downgrade needs to be analyzed case-by-case.

```release-note
Action required: The --storage-versions flag of kube-apiserver is deprecated. Please omit this flag to ensure the default storage versions are used. Otherwise the cluster is not safe to upgrade to a version newer than 1.12. This flag will be removed in 1.13.
```

/assign @deads2k @liggitt @lavalamp @enj 
/sig api-machinery

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Update etcd client to 3.2.24 for latest release

**What this PR does / why we need it**:
Updates etcd client to 3.2.24 which is the latest in the 3.2 series.  See https://github.com/etcd-io/etcd/blob/master/CHANGELOG-3.2.md for details. 

**Special notes for your reviewer**:
This is only the client, in order to update the server components it requires a googler to push the 3.2.24 image.  

**Release note**:

```
Update etcd client interface to 3.2.24
```

/assign @jpbetz @wojtek-t 
/cc @liggitt @kubernetes/sig-cluster-lifecycle @kubernetes/sig-scalability-pr-reviews

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Bump versions of components with latest security patches.

**What this PR does / why we need it**:
Upgrade versions of monitoring components used on GCP, to include latest security patches.

**Release note**:
```release-note
[fluentd-gcp-scaler addon] Bump fluentd-gcp-scaler to 0.4 to pick up security fixes.
[prometheus-to-sd addon] Bump prometheus-to-sd to 0.3.1 to pick up security fixes, bug fixes and new features.
[event-exporter addon] Bump event-exporter to 0.2.3 to pick up security fixes.
```

So we don't instantiate a new lister in every SetUpAt() call.

A/D controller and nodes need to watch CSIDrivers to know if they should send pod information
in NodePublish.

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apiserver: make InClusterConfig errs for delegated authn/z non-fatal

Fixes https://github.com/kubernetes/kubernetes/issues/68246:

Background:

In gci e2e tests the kube-controller-manager is started as static pod. When it first starts, there is no kubernetes service and the KUBERNETES_SERVICE_HOST and KUBERNETES_SERVICE_PORT env vars are not set inside the container.

When the kube-controller-manager is restarted, the KUBERNETES_SERVICE_HOST and KUBERNETES_SERVICE_PORT env vars are set, but the static pod has no service account, i.e. /var/run/secrets/kubernetes.io/serviceaccount/token does not exist. We made the later fatal in rest.InClusterConfig and its use to setup delegated authn/z.

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gke: fix failing e2e tests

```
/home/kubernetes/bin/configure-helper.sh: line 2032: ENABLE_NODE_TERMINATION_HANDLER: unbound variable
```

```release-note
NONE
```

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Fix volume scheduling issue with pod affinity and anti-affinity

**What this PR does / why we need it**:
The previous design of the volume scheduler had volume assume + bind done before pod assume + bind.  This causes issues when trying to evaluate future pods with pod affinity/anti-affinity because the pod has not been assumed while the volumes have been decided.

This PR changes the design so that volume and pod are assumed first, followed by volume and pod binding.  Volume binding waits (asynchronously) for the operations to complete or error. This eliminates the subsequent passes through the scheduler to wait for volume binding to complete (although pod events or resyncs may still cause the pod to run through scheduling while binding is still in progress).   This design also aligns better with the scheduler framework design, so will make it easier to migrate in the future.

Many changes had to be made in the volume scheduler to handle this new design, mostly around:
* How we cache pending binding operations.  Now, any delayed binding PVC that is not fully bound must have a cached binding operation.  This also means bind API updates may be repeated.
* Waiting for the bind operation to fully complete, and detecting failure conditions to abort the bind and retry scheduling.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #65131

**Special notes for your reviewer**:

**Release note**:

```release-note
Fixes issue where pod scheduling may fail when using local PVs and pod affinity and anti-affinity without the default StatefulSet OrderedReady pod management policy
```

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 Kubelet: only apply default hard evictions of nodefs.inodesFree on Linux

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

Kubelet sets default hard evictions of `nodefs.inodesFree ` for all platforms today. This will cause errors on Windows and a lot `no observation found for eviction signal nodefs.inodesFree` errors will be logs for kubelet.

```
kubelet.err.log:4961:W0711 22:21:12.378789    2872 helpers.go:808] eviction manager: no observation found for eviction signal nodefs.inodesFree
kubelet.err.log:4967:W0711 22:21:30.411371    2872 helpers.go:808] eviction manager: no observation found for eviction signal nodefs.inodesFree
kubelet.err.log:4974:W0711 22:21:48.446456    2872 helpers.go:808] eviction manager: no observation found for eviction signal nodefs.inodesFree
kubelet.err.log:4978:W0711 22:22:06.482441    2872 helpers.go:808] eviction manager: no observation found for eviction signal nodefs.inodesFree
```

This PR updates the default hard eviction value and only apply nodefs.inodesFree on Linux.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #66088

**Special notes for your reviewer**:

**Release note**:

```release-note
Kubelet only applies default hard evictions of nodefs.inodesFree on Linux
```

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Add kubelet stats for windows system container "pods"

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

This PR adds kubelet stats for windows system container "pods". Without this, kubelet will always logs error: 

```
kubelet.err.log:4832:E0711 22:12:49.241358    2872 helpers.go:735] eviction manager: failed to construct signal: "allocatableMemory.available" error: system container "pods" not found
```

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #66087

**Special notes for your reviewer**:

/sig windows
/sig node

**Release note**:

```release-note
Add kubelet stats for windows system container "pods"
```

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CSI Cluster Registry and Node Info CRDs Improvements

**What this PR does / why we need it**:
https://github.com/kubernetes/kubernetes/pull/67803 merged before I could address @lavalamp's feedback. This PR addresses his feedback

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Follow up on PR https://github.com/kubernetes/kubernetes/pull/67803

**Special notes for your reviewer**:

**Release note**:

```release-note

```

/assign @lavalamp 
/assign @thockin 

CC @jsafrane @vladimirvivien @verult @gnufied @childsb

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TTL for cleaning up Jobs after they finish

**What this PR does / why we need it**: https://github.com/kubernetes/features/issues/592

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #64470 
For https://github.com/kubernetes/features/issues/592

**Special notes for your reviewer**: @kubernetes/sig-apps-pr-reviews 

**Release note**:

```release-note
Add a TTL machenism to clean up Jobs after they finish.
```

Signed-off-by: Timothy St. Clair <timothysc@gmail.com>

volume and pod asynchronously afterwards. This will also make it easier
to migrate to the scheduler framework.

* FindPodVolumes
    * Prebound PVCs are treated like unbound immediate PVCs and will error
    * Always check for fully bound PVCs and cache bindings for not fully
      bound PVCs
* BindPodVolumes
    * Retry API updates for not fully bound PVCs even if the assume cache
      already marked it
    * Wait for PVCs to be fully bound after making the API updates
    * Error when detecting binding/provisioning failure conditions