Add CP algorithms test to the CI (ATLASG-2425). The idea is to make sure that the derivations do not unknowingly break analysis and to have the flagship analysis code always tested.
This runs in Athena on the DAOD outputs (chained). These tests add less than 1 minute in total, but due to parallelisation it is probably negligible.
Also added the flag-based autoconfig to simplify the test setup. Legacy CP algs config only for now.