[JENKINS-63022] Make Fingerprint Storage Engine configurable from the config page

[stellargo]

See JENKINS-63022.

Proposed changelog entries

• Developer: FingerprintStorage should now implemement descriptors, to make it configurable from the config page.
• User: User can choose the fingerprint storage engine from the config page.

Proposed upgrade guidelines

N/A

Submitter checklist

• (If applicable) Jira issue is well described
• Changelog entries and upgrade guidelines are appropriate for the audience affected by the change (users or developer, depending on the change). Examples
  • Fill-in the Proposed changelog entries section only if there are breaking changes or other changes which may require extra steps from users during the upgrade
• Appropriate autotests or explanation to why this change has no tests
• For dependency updates: links to external changelogs and, if possible, full diffs

Desired reviewers

@mention

Maintainer checklist

Before the changes are marked as ready-for-merge:

• There are at least 2 approvals for the pull request and no outstanding requests for change
• Conversations in the pull request are over OR it is explicit that a reviewer does not block the change
• Changelog entries in the PR title and/or Proposed changelog entries are correct
• Proper changelog labels are set so that the changelog can be generated automatically
• If the change needs additional upgrade steps from users, upgrade-guide-needed label is set and there is a Proposed upgrade guidelines section in the PR title. (example)
• If it would make sense to backport the change to LTS, a Jira issue must exist, be a Bug or Improvement, and be labeled as lts-candidate to be considered (see query).

[stellargo]

IIUC I need to obtain the object (singleton) from the list of configured descriptors. The problem is that hetero-list is not persisting this data.

[stellargo]

So data binding does not seem to be happening because of java.lang.UnsupportedOperationException: Refusing to marshal redis.clients.jedis.JedisPool for security reasons; see https://jenkins.io/redirect/class-filter/. Investigating...

[stellargo]

What I need to now figure out is how to fix the implementation of FingerprintStorage#get()

[oleg-nenashev]

@stellargo

ExtensionList.lookupSingleton(GlobalFingerprintConfiguration.class).getFingerprintStorage()

[afalko]

Do we need to add any log lines?

[stellargo]

Downstream PR: jenkinsci/redis-fingerprint-storage-plugin#36

[oleg-nenashev]

Looks good to me. We might need to adjust API in the future, but all important data is behind Beta flags

[timja]

This PR is ready-for-merge now, we'll merge it after 24 hours if there's no negative feedback

[oleg-nenashev]

Last changes do not change the PR in principle, so I think we do not need to reset the merge timeout. It may be merged in 6 hours