DestinationEfsFilesystemId constraint outdated

[Farmbuyer]

The current template in S3 and linked from https://github.com/aws-samples/amazon-efs-tutorial/tree/master/in-cloud-transfer has this parameter entry:

  DestinationEfsFilesystemId:
    AllowedPattern: ^(fs-)([a-z0-9]{8})$
    Description: Destination EFS filesystem id.
    Type: String

Unfortunately, EFS identifiers have more hex digits than that. (I suspect they fit in 8 digits at the time the template was last updated.) Pasting the ID of a perfectly usable EFS instance thus triggers errors when trying to use the template. :-)

Changing the 8 to 17 (the current number of EFS hex digits) in a local copy of the template was sufficient.