MGMT-17057: Update auth annotations when regenerating certs found in etcd

[mresvanis]

This PR ensures that when recert regenerates certs that are found in etcd and include the auth.openshift.io/certificate-not{after,before} annotations, it also updates the latter according to their respective validity period.

[openshift-ci-robot]

@mresvanis: This pull request references MGMT-17057 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 task to target the "4.16.0" version, but no target version was set.

In response to this:

This PR ensures that when recert regenerates certs that are found in etcd and include the auth.openshift.io/certificate-not{after,before} annotations, it also updates the latter according to their respective validity period.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: mresvanis

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[mresvanis]

/test baremetalds-sno-recert-cluster-rename
/test e2e-aws-ovn-single-node-recert-serial
/test e2e-aws-ovn-single-node-recert-parallel

[omertuc]

/lgtm

[omertuc]

/test baremetalds-sno-recert-cluster-rename
/test e2e-aws-ovn-single-node-recert-serial
/test e2e-aws-ovn-single-node-recert-parallel

[mresvanis]

/cherry-pick release-4.15

[openshift-cherrypick-robot]

@mresvanis: #112 failed to apply on top of branch "release-4.15":

Applying: Update auth.openshift.io/certificate-not{after,before} annotations when regenerating certs
Using index info to reconstruct a base tree...
M	src/cluster_crypto/cert_key_pair.rs
Falling back to patching base and 3-way merge...
Auto-merging src/cluster_crypto/cert_key_pair.rs
CONFLICT (content): Merge conflict in src/cluster_crypto/cert_key_pair.rs
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 Update auth.openshift.io/certificate-not{after,before} annotations when regenerating certs
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

In response to this:

/cherry-pick release-4.15

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.