put_object obscures reason when if fails

[David Kranz]

The Connection class has reset/retry logic that cannot work with ordinary put_object. So put_object raises a ClientException
if the put fails. But the code in put_object._default_reset throws away the actual information in the primary exception so the client cannot know why the call failed.

[Joel Wright (joel-wright-k)]

This would certainly still seem to be the case for 500 errors and possibly some 498 errors in the case that put_object._default_reset is in use.