[2/3] Federation PR

[ipmach]

Task

Methods that use persistency can use federation.

Note: we need to open an issue, load and save persistency from binary do not save the event_seen set.

Description

• Persistency can be federated.
• Variables methods like NewValue now allow federation.

How Has This Been Tested?

Checklist

• This Pull-Request goes to the development branch.
• I have successfully run prek locally.
• I have added tests to cover my changes.
• I have linked the issue-id to the task-description.
• I have performed a self-review of my own code.

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