List the keys available

def show_key(kwargs=None, call=None):
    '''
    List the keys available
    '''
    if call != 'function':
        log.error(
            'The list_keys function must be called with -f or --function.'
        )
        return False

    if not kwargs:
        kwargs = {}

    if 'keyname' not in kwargs:
        log.error('A keyname is required.')
        return False

    rcode, data = query(
        command='my/keys/{0}'.format(kwargs['keyname']),
        method='GET',
    )
    return {'keys': {data['name']: data['key']}}