wrap videoteam-copy-recordings.py to pass inventory values, add local_dest

I often record multi day events with no lan.
videoteam-copy-recordings is handy for moving the files of the recording box, but only if there is a lan and server to rsync to. I added rsync_local_dest inventory var, if set it becomes the destination for the rsync command. Which means I can rsync to a removable drive that has been plugged in and mounted.

I also added some debugging things like --test to only display the command, not run it.