Fix warnings and deprecations in tests.
Review Request #13566 — Created Feb. 21, 2024 and submitted — Latest diff uploaded
We had a handful of things in the RBTools that were hitting our own
deprecated code paths. This change cleans all of those up.This change also adds a few things to our warnings ignore list, and
moves the entire pytest configuration into setup.cfg to match our other
codebases.
Ran unit tests. Saw everything run with no warnings.