Jenkins 65712/secret name annotation fix

[vhajk]

The logic regarding updating the secrets while using the annotation "jenkins.openshift.io/secret.name" has been rewritten to be more concise and readable, and actually works now. Tested on multiple Jenkins instances.

Jira issue: JENKINS-65712

Submitter checklist

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• [x] Ensure you have provided tests - that demonstrates feature works or fixes the issue