Append the file contents in loadpath directory onto pubkeys list

def load_pubkeys(loadpath, pubkeys):

    """Append the file contents in loadpath directory onto pubkeys list"""

    filenames = os.listdir(loadpath)
    logger.debug('loading authorized pubkeys {0}'.format(filenames))
    for filename in filenames:
        pubkeys.append(open(join(loadpath, filename)).read())