DetectUnsupportedVersion is somewhat uncomfortable, complex and inefficient
function to use. It takes an entire YAML document as bytes, splits it up to
byte slices of the different YAML sub-documents and group-version-kinds and
searches through those to detect an unsupported kubeadm config. If such config
is detected, the function returns an error, if it is not (i.e. the normal
function operation) everything done so far is discarded.

This could have been acceptable, if not the fact, that in all cases that this
function is called, the YAML document bytes are split up and an iteration on
GVK map is performed yet again. Hence, we don't need DetectUnsupportedVersion
in its current form as it's inefficient, complex and takes only YAML document
bytes.

This change replaces DetectUnsupportedVersion with ValidateSupportedVersion,
which takes a GroupVersion argument and checks if it is on the list of
unsupported config versions. In that case an error is returned.
ValidateSupportedVersion relies on the caller to read and split the YAML
document and then iterate on its GVK map checking if the particular
GroupVersion is supported or not.
Signed-off-by: Rostislav M. Georgiev <rostislavg@vmware.com>

Add docs around importing auth plugins

tests: Makes UDP testing command more Windows friendly

Tune suggested master disk sizes for big clusters.

Looks like the get-master-root-disk-size() and get-master-disk-size() functions didn't anticipate
clusters bigger than 2K nodes.

In https://github.com/kubernetes/kubernetes/issues/72976 we found out
that 100GB may be not enough for large clusters (5K nodes) when it comes
to master root disk size.

Updating both get-master-root-disk-size() and get-master-disk-size() to
make them consistent and match cluster sizes with get-master-size()
function.

Use read lock for scheduler_binder_cache GetDecisions

fix shellcheck in k8s.io/apiserver

Fix golint failures

fix shellcheck in sample-controller

 Re-Organize the pkutil library

Adding the storage version hash to the discovery API

Added micahhausler as approver for AWS cloud provider

apimachinery/wait: add context-aware helpers

Cleanup callers of deprecated functions in volume/util 

Fix admission metrics in true units

fix golint failure for pkg/controller/deployment/util

Remove explicit nil initialization and correct error string.

Make pod eviction trigger graceful deletion to match deletion via API

Add e2e test for services with no endpoints

Fix volumes e2e test to check fsType

increase the memory limits to max

fix scheduler_perf integration test fails

Fix typos

generated proto

test/e2e/framework: fix external/internal typo err in GetNodeInternalIP

kubeadm: fix a couple of problems related to initData/joinData

Move import-restrictions.yaml to staging/publishing

publishing: bump go version to 1.10.8 for release-1.12

Fix a couple of problems related to data used by the phases runners
of `init` and `join`.

1) make `newInitData()` and `newJoinData()` return pointers.

Methods of the data objects returned by these functions should
be able to modify fields in the data objects - e.g.
`func (d initData) Client()`. This allows us to store a state and
not execute the same logic multiple times - e.g. obtaining a client.

A side effect of this change is that the `new...` functions must return
pointers, so that casting the data object in a phase, from
`workflow.RunData` to a locally defined interface, works.

2) Make it possible to pass arguments from a parent command
to a sub-phase with regards to data initialization.

Never skip multi-node conformance tests (instead just fail).

Only attempt to register cloud nodes on update with the cloud taint