WIP - Upstream 98116 - DO NOT MERGE.

[frobware]

At the moment I only want this to launch a cluster via cluster-bot.

Add support to the endpoint slice mirroring controller to mirror
annotations, in addition to labels, but don´t mirror endpoint
triggertime annotation.

Also, fix a bug in the endpointslice mirroring controller, that
wasn't updating the mirrored slice with the new labels, in case
that only the endpoint labels were modified.

What type of PR is this?

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[openshift-ci]

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

Test name	Commit	Details	Rerun command
ci/prow/verify-commits	93db4a4	link	/test verify-commits
ci/prow/e2e-aws-fips	93db4a4	link	/test e2e-aws-fips
ci/prow/e2e-gcp	93db4a4	link	/test e2e-gcp
ci/prow/k8s-e2e-gcp	93db4a4	link	/test k8s-e2e-gcp
ci/prow/e2e-agnostic-cmd	93db4a4	link	/test e2e-agnostic-cmd

Full PR test history. Your PR dashboard.

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