openshift/os: Sync 4.11 CI with 4.12, fix image tags for 4.12

[cgwalters]

Copy all the bits from current master to the 4.11 branch to keep
things in sync.

However, we also fix the tags for the master job to target 4.12.

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cgwalters

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[miabbott]

This doesn't seem to match some of the other CI configs (MCO, Installer) for the master branch that I checked and I'm curious if this is going to have an adverse affect on the automated branching operation. Any harm in leaving it at 4.11?

[cgwalters]

For some reason though, openshift/os is not having its release-4.11 branch fast forwarded to match master automatically today, unlike other repos.

[cgwalters]

IOW, things are already not in sync, so we need to this now.

[travier]

Whoops, I duplicated part of this one in #29258

[travier]

Moving the COSA changes to #29266

[openshift-ci]

@cgwalters: 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/rehearse/openshift/os/master/test-qemu-kola	75a6fa9	link	unknown	/test pj-rehearse
ci/prow/pj-rehearse	75a6fa9	link	false	/test pj-rehearse
ci/rehearse/openshift/os/master/test-in-cluster	75a6fa9	link	unknown	/test pj-rehearse
ci/prow/generated-config	75a6fa9	link	true	/test generated-config
ci/prow/release-controller-config	75a6fa9	link	true	/test release-controller-config

Full PR test history. Your PR dashboard.

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[travier]

This one is replaced by either #29949 or #29964
/close

[openshift-ci]

@travier: Closed this PR.

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In response to this:

This one is replaced by either #29949 or #29964
/close

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