Make RichFuture.py example work even if env vars are not defined.

The example Rec/Rich/RichFutureRecSys/examples/RichFuture.py would fail unless some env variables were defined. This fix makes it still work even if those are undefined.

CC @jonrob @rmatev

approved this merge request

@jonrob do you want this to be tested somewhere? Right now I don't think it is.

Indeed, that exact file is not tested. I test something similar in the two Rec QM tests, but those specifically use a different file, as I want that to be fixed, and this file tends to evolve with whatever I am doing at any given point in time. Its just a convenience keeping it in git. So no need to test.

@dcampora Can you please add appropriate labels to this MR? Thanks.

added RICH cleanup labels

approved this merge request

merged

mentioned in commit 58a6b465