net: fix dialing google test

R=golang-dev, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/5573060

src/pkg/net/dialgoogle_test.go

@@ -19,7 +19,7 @@ var ipv6 = flag.Bool("ipv6", false, "assume ipv6 tunnel is present")
 // fd is already connected to the destination, port 80.
 // Run an HTTP request to fetch the appropriate page.
 func fetchGoogle(t *testing.T, fd Conn, network, addr string) {
-	req := []byte("GET /intl/en/privacy/ HTTP/1.0\r\nHost: www.google.com\r\n\r\n")
+	req := []byte("GET /robots.txt HTTP/1.0\r\nHost: www.google.com\r\n\r\n")
 	n, err := fd.Write(req)
 
 	buf := make([]byte, 1000)