Function casper_node::migrate_config

pub fn migrate_config(
    _old_config: WithDir<Config>, 
    _new_config: WithDir<Config>
) -> Result<(), Error>

Migrates values from the old config file to the new one, modifying the new config file on-disk.

This should be executed after a new version is available, but before the casper-node has been run in validator mode using the new version.