fix: handle pg_replication_slots/pg_stat_replication on replicas and cascading replicas #548
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Hello,
This PR aims to fix #547 where
pg_replication_slots
andpg_stat_replication
metrics don't work well on replicas and cascading replicas (also known as standby leaders on Patroni). This allows standby clusters replication to be monitored :)It has been tested on pg 13, 10.7 and 9.6