OCPNODE-3759: Promote SigstoreImageVerificationPKI feature to default

[QiWang19]

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[openshift-ci]

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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.

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[QiWang19]

/test all

[openshift-ci]

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[openshift-ci-robot]

@QiWang19: This pull request references OCPNODE-3759 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]

@QiWang19: 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/okd-scos-e2e-aws-ovn	2b2bcc6	link	false	/test okd-scos-e2e-aws-ovn
ci/prow/verify-feature-promotion	2b2bcc6	link	true	/test verify-feature-promotion

Full PR test history. Your PR dashboard.

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