Change file names about compoundpi

[tcconway]

To possibly answer my own question, I believe there are two routes to go:

1. Use a batch script instead of the CLI: http://compoundpi.readthedocs.io/en/latest/batch.html

2. Batch reorder/rename the files, assuming all your Pis have sequential IP Addressing, with something like:

rename -n 's/(.+)-(.+)-(.+).jpg/$3-$1-$2.jpg/' *.jpg

(Once confirmed it works, remove the -n to actually perform the operation.)