Clean up the logging output (#12253)

* Clean up the logging output

Sadly `trust-dns` and `libp2p::iface` are printing stuff that isn't very informative and just
confuses the user. So, we just disable logging output from both of these crates as we already have
done this for other crates as well.

* FMT

substrate/client/tracing/src/logging/mod.rs

@@ -133,7 +133,14 @@ where
 		.add_directive(
 			parse_default_directive("cranelift_wasm=warn").expect("provided directive is valid"),
 		)
-		.add_directive(parse_default_directive("hyper=warn").expect("provided directive is valid"));
+		.add_directive(parse_default_directive("hyper=warn").expect("provided directive is valid"))
+		.add_directive(
+			parse_default_directive("trust_dns_proto=off").expect("provided directive is valid"),
+		)
+		.add_directive(
+			parse_default_directive("libp2p_mdns::behaviour::iface=off")
+				.expect("provided directive is valid"),
+		);
 
 	if let Ok(lvl) = std::env::var("RUST_LOG") {
 		if lvl != "" {