Request the return data from a specific jid, only allowed
        if the requesting minion also initialted the execution.

def pub_ret(self, load, skip_verify=False):
        '''
        Request the return data from a specific jid, only allowed
        if the requesting minion also initialted the execution.
        '''
        if not skip_verify and any(key not in load for key in ('jid', 'id')):
            return {}
        else:
            auth_cache = os.path.join(
                    self.opts['cachedir'],
                    'publish_auth')
            if not os.path.isdir(auth_cache):
                os.makedirs(auth_cache)
            jid_fn = os.path.join(auth_cache, load['jid'])
            with salt.utils.files.fopen(jid_fn, 'r') as fp_:
                if not load['id'] == salt.utils.stringutils.to_unicode(fp_.read()):
                    return {}

            return self.local.get_cache_returns(load['jid'])