TrigValSteering: Memoize path lookup and add more debug messages

This should hopefully fix ATR-21080. The slowest part of the test configuration, and therefore the unit tests, is the path lookup with find_data and get_files. Since they were called multiple times per test, the delays were multiplied. This MR adds the memoize modifier to these calls to avoid multiple lookups of the same path.

Several extra debug messages are also added to help debug such problems in the future. The time format in the logger will now also show seconds.

This merge request affects 1 package:

• Trigger/TrigValidation/TrigValTools

Adding @hartj ,@jpanduro as watchers

added Trigger master review-pending-level-1 labels

CI Result SUCCESS (hash 2701ef06)

	Athena	AthSimulation
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 10553]

added review-approved label and removed review-pending-level-1 label

mentioned in merge request !30896 (merged)

merged

mentioned in commit 7d24e722

added sweep:ignore label

mentioned in merge request !31073 (merged)

resolved all threads