NO-ISSUE: Replace 4.18 image references with 4.19

[joelanford]

Description of the change:

Motivation for the change:

Reviewer Checklist

• Implementation matches the proposed design, or proposal is updated to match implementation
• Sufficient unit test coverage
• Sufficient end-to-end test coverage
• Docs updated or added to /docs
• Commit messages sensible and descriptive

[openshift-ci-robot]

@joelanford: This pull request explicitly references no jira issue.

In response to this:

Description of the change:

Motivation for the change:

Reviewer Checklist

• Implementation matches the proposed design, or proposal is updated to match implementation
• Sufficient unit test coverage
• Sufficient end-to-end test coverage
• Docs updated or added to /docs
• Commit messages sensible and descriptive

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: joelanford

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[openshift-ci]

@joelanford: 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-gcp-console-olm	f2454df	link	true	/test e2e-gcp-console-olm
ci/prow/okd-scos-e2e-aws-ovn	f2454df	link	false	/test okd-scos-e2e-aws-ovn
ci/prow/e2e-gcp	f2454df	link	true	/test e2e-gcp
ci/prow/e2e-aws-ovn-serial	f2454df	link	true	/test e2e-aws-ovn-serial

Full PR test history. Your PR dashboard.

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