Description

• ReplicationServerConfig is now using Endpoint struct.
• ReplicationClientConfig is now using Endpoint struct.
• Replication can now use DNS properly by lazily postponing resolution until connecting sockets.
• Bumped replication durability version to V4, added corresponding migration function.
• Fixed the bug where migration from V2 to V3 wasn't made durable.
• V4 replication durability is saving Endpoint to replica_server key, replica_ip_address isn't used anymore.
• Removed V1Main and V2Main tests because to_json is now serializing only the latest versions.
• ReplicationReplicaEntry is also using DurabilityVersion but implicitly through ReplicationRoleEntry.

[master < Task] PR

• Provide the full content or a guide for the final git message
  • Lazy evaluation of replication DNS

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Documentation checklist

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  • When using DNS in replication, its resolution is postponed until streaming data using RPC connections
  • Replication durability version is bumped to V4.
  • @andrejtonev anything more for RN, what do you think?
• Link the documentation PR here
  • [Documentation PR link]
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