Fix for a too long socket filename on macOS

unix_listener: path "/var/folders/6m/sq5nmcq97sn26smfkbbct8lh0000gn/T/ssh-tunnel-to-testhost-ssh-sock-jyeo415j.sock.32ygNYL9GkNYTGms" too long for Unix domain socket

Author: pertsevds

ssh_tunnel.py

@@ -5,9 +5,7 @@
 
 @contextmanager
 def create_ssh_tunnel(hostname, local_socket, remote_socket):
-    ssh_socket_filename = gen_temp_socket_filename(
-        f"ssh-tunnel-to-{hostname}-ssh-sock-", ".sock"
-    )
+    ssh_socket_filename = gen_temp_socket_filename(f"{hostname}.")
     ssh_tunnel_cmd = [
         "ssh",
         "-qfN",