[CODE] Make doodbsetup compatible with python 2

Although it's not recommended nor officially supported, this simple change avoids syntax errors that can happen e.g. when compiling python code in Odoo <= 10.0 with a repo included in another, like with the use case explained in Tecnativa/doodba#174.

.vscode/doodbasetup.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+from __future__ import print_function
+
 from configparser import ConfigParser
 from os import path
 from urllib.request import urlretrieve