Add heartbeat and zk-connected metrics in defaultMetrics.json #16209
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Fixes #16148
Description
I have updated https://github.com/apache/druid/blob/master/extensions-contrib/prometheus-emitter/src/main/resources/defaultMetrics.json this file and added the
zk-connected
andservice/heartbeat
metrics.Release note
Improved: Prometheus-emitter extension now emits service/heartbeat and zk-connected metrics.
This PR has: