[FIX] setup: server UTC timezone on windows

In 07bf7bf4f3 a fix was introduced for windows server UTC timezone.

It is possible it would be helpful in some situation to also have it in
setup/odoo (for example if odoo was installed on windows in some other
way than the Installation bundle).

opw-693764

setup/odoo

@@ -1,4 +1,7 @@
 #!/usr/bin/env python
+
+# set server timezone in UTC before time module imported
+__import__('os').environ['TZ'] = 'UTC'
 __import__('pkg_resources').declare_namespace('odoo.addons')
 import odoo