[BUGFIX] CI setup. If-statement about OSM Tests was wrong.

2 jobs for develop in 1 minute and 39 seconds (queued for 2 seconds)
Name Stage Failure
run_scenario_files Deploy
[INFO] Final Memory: 45M/718M
[INFO] ------------------------------------------------------------------------
$ python3 Tools/ContinuousIntegration/run_vadere_console_with_all_scenario_files.py
* Output is only shown for scenarios that fail *
Traceback (most recent call last):
File "Tools/ContinuousIntegration/run_vadere_console_with_all_scenario_files.py", line 108, in <module>
passed_and_failed_scenarios = run_scenario_files_with_vadere_console(scenario_files_regular_lengt)
NameError: name 'scenario_files_regular_lengt' is not defined
ERROR: Job failed: exit status 1