Fix: Start systemtest counter from 1 instead of 0

[BytePaul]

Summary

Previously, the counter in log messages started from 0, which could be confusing to users expecting 1-based indexing.

Before:

INFO: Started running Flow over heated plate, 0/2
INFO: Started running Perpendicular flap, 1/2

After:

INFO: Started running Flow over heated plate, 1/2
INFO: Started running Perpendicular flap, 2/2

Changes Made

• Modified tools/tests/systemtests.py to change the counter from number to number + 1 in the log line.

[MakisH]

This closes #644

[MakisH]

Thank you for the fix! Could you please also port this to the following files, which suffer from the same issue?

• tools/tests/build_docker_images.py
• tools/tests/generate_reference_results.py

[BytePaul]

Hi!
I have made the changes requested by you.

[MakisH]

Hi @BytePaul,

please push the updates to the same branch (BytePaul:paulg) and close the other PRs (#651, #652).

In next PRs, it would be more convenient both for you and for everyone reviewing PRs to name branches based on what they contribute (for example, system-tests-counter would have been a good name here). This is fine for this one, but later on you might get confused by the multiple branches in your fork.