Re-add trydevpi to dependency_links

It is needed to install Tryton's dependencies of dependencies.

issue8044

setup.py

@@ -52,6 +52,8 @@ requires.append(get_require_version('trytond'))
 
 tests_require = [get_require_version('proteus')]
 dependency_links = []
+if minor_version % 2:
+    dependency_links.append('https://trydevpi.tryton.org/')
 
 setup(name=name,
     version=version,