add --output & --dry-run options to oc-adm-policy sub-commands

[juanvallejo]

Fixes #14808

Adds --output flags with support for json and yaml output to every oc adm policy sub-command, as well as --dry-run flag support to several sub-commands.

Still have a few sub-commands left to update, but opening PR to begin gathering any feedback.

cc @openshift/cli-review

[stevekuznetsov]

/hold

[stevekuznetsov]

/hold cancel

[stevekuznetsov]

/close

[stevekuznetsov]

/open

[stevekuznetsov]

@Kargakis is /open supposed to work?

[openshift-ci-robot]

@juanvallejo: Your pull request title starts with "[WIP]", so the do-not-merge/work-in-progress label will be added.

This label will ensure that your pull request will not be merged. Remove the prefix from your pull request title to trigger the removal of the label and allow for your pull request to be merged.

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[0xmichalis]

@stevekuznetsov /reopen it is

[stevekuznetsov]

Too far away from this code to review

/unassign

[juanvallejo]

/test end_to_end

[juanvallejo]

/test extended_conformance_install_update

[juanvallejo]

/test extended_conformance_install_update

[juanvallejo]

cc @fabianofranz

[fabianofranz]

/lgtm
/approve

[openshift-merge-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: fabianofranz, juanvallejo

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these OWNERS Files:

• contrib/completions/OWNERS [fabianofranz,juanvallejo]
• pkg/oc/OWNERS [fabianofranz]
• test/cmd/OWNERS [fabianofranz]

You can indicate your approval by writing /approve in a comment
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[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-merge-robot]

/test all [submit-queue is verifying that this PR is safe to merge]

[openshift-merge-robot]

Automatic merge from submit-queue (batch tested with PRs 16439, 16218, 16387, 16509)

[openshift-ci-robot]

@juanvallejo: The following tests failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
ci/openshift-jenkins/cmd	609c558	link	/test cmd
ci/openshift-jenkins/extended_conformance_gce	609c558	link	/test extended_conformance_gce

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. I understand the commands that are listed here.