MCO-1941: Add OSStream FeatureGate

[pablintino]

No description provided.

[openshift-ci-robot]

@pablintino: This pull request references MCO-1941 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the story to target the "4.21.0" version, but no target version was set.

In response to this:

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[openshift-ci]

Hello @pablintino! Some important instructions when contributing to openshift/api:
API design plays an important part in the user experience of OpenShift and as such API PRs are subject to a high level of scrutiny to ensure they follow our best practices. If you haven't already done so, please review the OpenShift API Conventions and ensure that your proposed changes are compliant. Following these conventions will help expedite the api review process for your PR.

[isabella-janssen]

/lgtm

Looks good to me from the team-MCO side of things!

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: isabella-janssen
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[openshift-ci-robot]

Scheduling tests matching the pipeline_run_if_changed or not excluded by pipeline_skip_if_only_changed parameters:
/test e2e-aws-ovn
/test e2e-aws-ovn-hypershift
/test e2e-aws-ovn-hypershift-conformance
/test e2e-aws-ovn-techpreview
/test e2e-aws-serial-1of2
/test e2e-aws-serial-2of2
/test e2e-aws-serial-techpreview-1of2
/test e2e-aws-serial-techpreview-2of2
/test e2e-azure
/test e2e-gcp
/test e2e-upgrade
/test e2e-upgrade-out-of-change

[openshift-ci]

@pablintino: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-aws-serial-techpreview-1of2	4646bbb	link	true	/test e2e-aws-serial-techpreview-1of2
ci/prow/okd-scos-e2e-aws-ovn	4646bbb	link	false	/test okd-scos-e2e-aws-ovn

Full PR test history. Your PR dashboard.

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