Bug: Refinery Metrics and Logs don't support the REFINERY_API_HOST environment variable

[tdarwin]

In Refinery 2.8.4 (and main), Refinery's file_config.go doesn't appear to reference the CmdEnv loading of the REFINERY_API_HOST for configuring sending Refinery telemetry to Honeycomb.

It looks like it loads correctly in the network config:

type NetworkConfig struct {
	ListenAddr      string   `yaml:"ListenAddr" default:"0.0.0.0:8080" cmdenv:"HTTPListenAddr"`
	PeerListenAddr  string   `yaml:"PeerListenAddr" default:"0.0.0.0:8081" cmdenv:"PeerListenAddr"`
	HoneycombAPI    string   `yaml:"HoneycombAPI" default:"https://api.honeycomb.io" cmdenv:"HoneycombAPI"`
	HTTPIdleTimeout Duration `yaml:"HTTPIdleTimeout"`
}

See the cmdenv:"HoneycombAPI"

But in the telemetry sections like [OTelMetricsConfig[(https://github.com/honeycombio/refinery/blob/fa1520ca28519393f9262126e96ad1a38d35b3dc/config/file_config.go#L270), that cmdenv isn't referenced for the APIHost Option:

type OTelMetricsConfig struct {
	Enabled           bool     `yaml:"Enabled" default:"false"`
	APIHost           string   `yaml:"APIHost" default:"https://api.honeycomb.io"`
	APIKey            string   `yaml:"APIKey" cmdenv:"OTelMetricsAPIKey,HoneycombAPIKey"`
	Dataset           string   `yaml:"Dataset" default:"Refinery Metrics"`
	Compression       string   `yaml:"Compression" default:"gzip"`
	ReportingInterval Duration `yaml:"ReportingInterval" default:"30s"`
}

Versions

• Refinery: <= 2.8.4/main

Steps to reproduce

1. Try to use the REFINERY_API_HOST environment variable to send metrics or logs of Refinery operations to Honeycomb.

Additional context

Not sure if this should use the same environment variable or not (probably should), but want to give the option of creating a REFINERY_TELEMETRY_API_HOST so that folks can send their Refinery telemetry to a different endpoint than they're sending their application telemetry.