Improve logs metadata

Author: esen

Sources/GRPC/ClientConnection.swift

@@ -363,17 +363,17 @@ extension ClientConnection {
     // Provide a server hostname if we're using TLS. Prefer the override.
     var serverHostname: String? = configuration.tls.map {
       if let hostnameOverride = $0.hostnameOverride {
-        logger.debug("using hostname override for TLS", metadata: ["server-hostname": "\(hostnameOverride)"])
+        logger.debug("using hostname override for TLS", metadata: ["server-hostname": hostnameOverride])
         return hostnameOverride
       } else {
         let host = configuration.target.host
-        logger.debug("using host from connection target for TLS", metadata: ["server-hostname": "\(host)"])
+        logger.debug("using host from connection target for TLS", metadata: ["server-hostname": host])
         return host
       }
     }
 
     if let hostname = serverHostname, hostname.isIPAddress {
-      logger.debug("IP address cannot be used for TLS SNI extension. No host used", metadata: ["server-hostname": "\(hostname)"])
+      logger.debug("IP address cannot be used for TLS SNI extension. No host used", metadata: ["server-hostname": hostname])
       serverHostname = nil
     }