Flask app.py files have hard coded config{} structure that need to be replaced with config files

[rherrell]

Multiple Sunfish server instances are used to implement a Sunfish management stack from multiple agents to a single Sunfish Service. Each instance is a different app.py program run using Flask to provide the web API. However, each different app.py program has a hard coded config{} structure. It would be more convenient to make all instances run the same app.py program and have the program load an instance-specific config{} structure from an instance-specific config.json file.