[Tech debt] Replication

[patiencedaur]

Details

• Copy the diagram on box.info.replication to other replication related sections #3059
• [2pt] describe election_mode='manual' #2088
• feedback: Automated leader election | Tarantool #2924
• [3pt] deprecate box.ctl.clear_synchro_queue() in favor of box.ctl.promote() #2089
• [1pt] feedback: Справочник по настройке | Tarantool #1693
• [2pt] feedback: Справочник по настройке | Tarantool #2034
• [3pt] Provide box.info.synchro interface #2044
• [3pt] document triggers on election state change #2274
• [replication] box.info.synchro.queue gets a new field "owner" #2277
• [replication] box.info.synchro.queue gets a new field "busy" #2741
• [replication] box.info.synchro.queue gets a new field "term" #2831
• New configuration option - replication_threads #2590
• feedback: Monitoring a replica set | Tarantool #2604
• Rewrite the description of box.cfg.replication #2811
• [3pt] feedback: Решение конфликтов репликации | Tarantool #2478
• mopinion: missed example for setting up anon replication #1700
• [3pt] box.info.ro_reason #2445
• Add details to box.info.replication[id].upstream/downstream.status #3137
• [3pt] Add the new box.ctl.demote() entry #2278