cluster property
Defines the local service cluster name where Envoy is running.
Though optional, it should be set if any of the following features are
used: :ref:statsd , :ref:health check cluster verification ,
:ref:runtime override directory , :ref:user agent addition ,
:ref:HTTP global rate limiting , :ref:CDS , and :ref:HTTP tracing ,
either in this message or via :option:--service-cluster.
Implementation
core.String? cluster;