The definition of 'subtype' is 'a secondary or subordinate type'. The
'T' should not be capitalized (unless it is referring to a type of
submarine, which its not).
This is a wire breaking change for json errors since we have removed and renamed a few fields, and changed part of the structure of the returned json error.
* Remove redundant fields in Status, details.error_id, details.TraceId and details.request_id from API errors.
* Added wrapped errors and "ops" field to indicate the internal operation of the errors returned by the API.
* Added error cli error reporting of Op and wrapped errors.
Michael Gaffney
