generating UUID creation token for EFS
Question: Is this sufficient for generating a UUID for using as a creation token for AWS
CLI EFS ~ Elastic File System? Assuming you've been granted appropriate
permissions.

    
    
    Python 2.7.9 (default, Dec 10 2014, 12:24:55) [MSC v.1500 32 bit (Intel)] on win32
    Type "help", "copyright", "credits" or "license" for more information.
    >>> import uuid
    >>> uuid.uuid4()
    UUID('c3505347-ec30-4f74-9597-e4180de6c56f')
    >>>
    


Answer: That should be fine. If the file system made with that token already exists, a
`FileSystemAlreadyExists` error will be returned. Ideally you should keep
track of tokens you've sent over the wire at least until the EFS has been
successfully created.

