Add Support for {server_uuid} Macro to Identify Replicas in Autoscaled Clusters

Why it matters

This feature addresses the challenge of distinguishing replicas in environments where new replicas are frequently added and removed at runtime. Using the {server_uuid} macro helps in reliably identifying each replica despite dynamic cluster changes, improving management and monitoring of autoscaled clusters.

How to use it

Users can include the {server_uuid} macro in their configuration files or queries where replica identification is required. This macro will be automatically replaced with the unique UUID of the server replica at runtime.