Automatic merge from submit-queue (batch tested with PRs 63070, 63536). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
use IOStreams for cli commands
Scrubs the last commands to use IOStreams for consistency and testability.
@kubernetes/sig-cli-maintainers
/assign @juanvallejo
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 63291, 63490, 60445, 63507, 63524). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
default the ignorenotfound for delete when selecting objects
When selecting resources and then deleting them (as opposed to specifically indicating a resource to delete) we should default to not failing if something disappeared partway through. This is quite common when label selecting deletes and GC runs before you get to a dependent object.
I also took the liberty of doing complete work in complete instead of validate.
```release-note
`kubectl delete` with selection criteria defaults to ignoring not found errors
```
@kubernetes/sig-cli-maintainers
Automatic merge from submit-queue (batch tested with PRs 63315, 63383, 63318, 63439). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
drive resourcebuilder from kubeconfig, allow scheme specification
This updates the resource builder to work based on a kubeconfig to allow future chaining of flags. It also allow specification of the scheme you want for your actual decoding.
@kubernetes/sig-cli-maintainers
```release-note
NONE
```
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
remove mapper dependency for cmdutil.Factory#PrintSuccess
**Release note**:
```release-note
NONE
```
Part of a series of patches removing printing stack dependency on mappings the rest mapper
**Before**
```
$ kubectl label pod/my-pod label=label
pod "my-pod" labeled
```
**After**
```
$ kubectl label pod/my-pod label=label
pods "my-pod" labeled
```
cc @deads2k
Automatic merge from submit-queue (batch tested with PRs 57229, 58907). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Abstract cmd valid args get behind the factory
**What this PR does / why we need it**:
This abstract retrieving the list of handled resources for valid args as a function to follow more conventions.
**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
```
Reduce all uses of Unstructured to the simpler form, and avoid asking
for mapper or typer unless it is required. Use Typed() for places that
previously used VersionedObject, and remove paths for versioned objects
from code that is now using unstructured.
Moves DisabledClientMapperForMapping wrapper to new Local attribute.
Removes Factory#NewUnstructuredBuilder in favor of new Unstructured
builder attribute.
Automatic merge from submit-queue
Fixes grace period in delete
**What this PR does / why we need it**: Fixes `kubectl delete` ignoring `--grace-period`.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes https://github.com/openshift/origin/issues/15060 found in OpenShift.
**Release note**:
```release-note
NONE
```
* Rename variables and functions to match Go convention.
For example, UsageError --> UsageErrorf.
* Remove redundant or unreachable code.
* Simplify some utility functions (no functionality changes).
* Fix hanging 'if { return } else { return }' constructs.
* Fix several incorrect printf verbs.
