Require an explicit ServiceName annotation for interfaces in Python.

mojo/public/python/mojo_bindings/interface_reflection.py

Index: mojo/public/python/mojo_bindings/interface_reflection.py
diff --git a/mojo/public/python/mojo_bindings/interface_reflection.py b/mojo/public/python/mojo_bindings/interface_reflection.py
index 8ce3882106ba7deb30bd3b0b562365e5fc8bebdb..b78b1775dee55da7c6cb5e641e094123ed48465d 100644
--- a/mojo/public/python/mojo_bindings/interface_reflection.py
+++ b/mojo/public/python/mojo_bindings/interface_reflection.py
@@ -67,8 +67,9 @@ class MojoInterfaceType(type):
     fully_qualified_name = descriptor['fully_qualified_name']
 
     interface_manager = InterfaceManager(
-        fully_qualified_name, descriptor['version'], methods)
+        name, descriptor['version'], methods)
     dictionary.update({
+        'service_name' = fully_qualified_name,
         'manager': None,
         '_interface_manager': interface_manager,
     })