add traces attributes (#214)

Author: weslenteche

src/SymfonyInstrumentation.php

@@ -57,6 +57,9 @@ public static function register(): void
                         ->setAttribute(TraceAttributes::HTTP_REQUEST_BODY_SIZE, $request->headers->get('Content-Length'))
                         ->setAttribute(TraceAttributes::URL_SCHEME, $request->getScheme())
                         ->setAttribute(TraceAttributes::URL_PATH, $request->getPathInfo())
+                        ->setAttribute(TraceAttributes::USER_AGENT_ORIGINAL, $request->headers->get('User-Agent'))
+                        ->setAttribute(TraceAttributes::SERVER_ADDRESS, $request->getHost())
+                        ->setAttribute(TraceAttributes::SERVER_PORT, $request->getPort())
                         ->startSpan();
                     $request->attributes->set(SpanInterface::class, $span);
                 } else {