Understand what samples are needed to get to a full 200 TB

[gordonwatts]

ATLAS has this very annoying habit of deleting p-tags out from under one - especially with modern PHYSLITE samples as they are evolving so quickly. So it behoves us to get a list of samples that we can pin at Chicago.

• List of the rucio samples that we will use below that total about 200 TB of overall data.
• Place the samples in the README.md at the root directory.

Once this is done, then we can have UChicago pin them.

[alexander-held]

We decided to go with Run-2 PHYSLITE now (mc20a/d/e), I'll put together a standard set of samples for this. We'll want to store both container names and paths to files including respective XCache instances.