Replace config.set_request_property by config.add_request_method

For compatibility with pyramid 1.10

pyramid_ldap/__init__.py

@@ -301,7 +301,7 @@ def get_connector(request):
         registry = request.registry
         return Connector(registry, manager)
 
-    config.set_request_property(get_connector, 'ldap_connector', reify=True)
+    config.add_request_method(get_connector, 'ldap_connector', property=True, reify=True)
 
     intr = config.introspectable(
         'pyramid_ldap setup',