[surfacers.prometheus] Allow configuring metrics prefix through a flag. #732
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- Add a new flag `--prometheus_metrics_prefix` to set metrics prefix for the prometheus surfacer. - In a typical multi-tenant deployment, one would want to set metrics prefix for all tenants. Since configs are usually tenant specific, configs are not a good place for that, while binary flags are usually controlled by the operator, making them a good place for such settings.
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Add a new flag
--prometheus_metrics_prefixto set metrics prefix for the prometheus surfacer.In a typical multi-tenant deployment, one would want to set metrics prefix for all tenants. Since configs are usually tenant specific, configs are not a good place for that, while binary flags are usually controlled by the operator, making them a good place for such settings.