Raise exception on all 4xx and 5xx responses.

Fixes bug 965826.

Change-Id: I44ce602176320b1e60e4c927e19a7eec232923b9

novaclient/client.py

@@ -103,7 +103,7 @@ def request(self, *args, **kwargs):
         else:
             body = None
 
-        if resp.status in (400, 401, 403, 404, 408, 409, 413, 500, 501):
+        if resp.status >= 400:
             raise exceptions.from_response(resp, body)
 
         return resp, body