implement call to let raft know that a follower's db has been updated
|Category:||Core & System|
|Target version:||Release 5.4.3|
|Affected Versions:||OpenNebula 5.4|
If a follower is offline for a very long time, the only recovery possible is to manually copy DB to the follower. In this case it's also necessary to inform the leader that the follower's DB is up to date, otherwise it will send the records since the last time the follower was online, which is unnecessary and can be problematic because if the record is too old, it might be purged and not available.