Update daq_wiper.py to support test stands as default

The Python3 update to the daq_wiper.py for deleting old frame files was carefully crafted to match the H1 DAQ configuration of frame file sizes, etc. However, it just does not work on the basic stand-alone test stands, which just need something to keep the /frames disk from over-flowing. It also does not work on L1. Move the H1-specific code to the front-end puppet and change this back to code that by default will work for stand-alone test stands. We can start with the old wiper.pl (still in use on L1 DAQ) and upgrade to Python3. Add improvements such as allowing configuration elements to be defined in an environment file for the systemd daemon.