config_parser: add missing tcp_proxy_server options (fib, so_mark, netif, bind_ip); tcp_proxy_server: move diag log to TRACE

src/proxy/tcp_proxy_server.c

@@ -193,7 +193,7 @@ static void diag_timer_cb(void* arg) {
     getsockopt(tc->sock, SOL_SOCKET, SO_RCVBUF, (char*)&rcv_buf, &optlen);
     getsockopt(tc->sock, SOL_SOCKET, SO_SNDBUF, (char*)&snd_buf, &optlen);
 
-    DEBUG_DEBUG(DEBUG_CATEGORY_PROXY,
+    DEBUG_TRACE(DEBUG_CATEGORY_PROXY,
         "SOCK:DIAG fd=%d sid=%08x conn=%d fin=%d "
         "rq=%d(%zub) wq=%d(%zub) wbuf=%s "
         "ent_f=%d dat_f=%d tcp_rb=%zu tcp_sb=%zu",