Download a list of files stored on the master and put them in the
        minion file cache

def cache_files(self, paths, saltenv='base', cachedir=None):
        '''
        Download a list of files stored on the master and put them in the
        minion file cache
        '''
        ret = []
        if isinstance(paths, six.string_types):
            paths = paths.split(',')
        for path in paths:
            ret.append(self.cache_file(path, saltenv, cachedir=cachedir))
        return ret