'Update the extra specs list.
:param extraspecs: extraspecs
:param volumetype_Id: volume type identifier
:param interval: Interval in seconds between retries
:param retries: Retry count
:returns: extraspecs_dict_list'

def _update_extra_specs_list(self, extraspecs, volumetype_id, interval, retries):

    extraspecs_dict = {}
    extraspecs = self.update_extra_specs(extraspecs)
    extraspecs = self._update_intervals_and_retries(extraspecs, interval, retries)
    extraspecs_dict['volumeTypeId'] = volumetype_id
    extraspecs_dict[EXTRA_SPECS] = extraspecs
    return extraspecs_dict
