Add tracing integration with opentelemetry

src/util/config.rs

@@ -104,6 +104,8 @@ pub struct WebConfig {
 pub struct AdminConfig {
 	/// Address and port to bind for admin API serving
 	pub bind_addr: SocketAddr,
+	/// OTLP server to where to export traces
+	pub otlp_export_traces_to: Option<String>,
 }
 
 fn default_sled_cache_capacity() -> u64 {