Add some minbias tests comparing against offline tracks
Add some minbias tests comparing against offline tracks, also replace one of the existing minbias tests with the new, improved configuration code to remove most of the duplicated code
Modify the key in the json file to reduce the number of things that need to be independently changed
Move files needed only for release 21.3 to a new obsolete directory. As soon as it is established these are no longer needed, this obsolete directory will be removed