mocking request to weather API

rowers/tests/mocks.py

@@ -610,6 +610,7 @@ def mocked_requests(*args, **kwargs):
         def __init__(self, json_data, status_code):
             self.json_data = json_data
             self.status_code = status_code
+            self.ok = True
 
         def json(self):
             return self.json_data