Added the setting of a random rc_controller port in integrationtest_drunc.py...

[bieryAtFnal]

…to support the running of multiple regression tests at the same time on a single computer.

Description

These changes go along with the ones that Michal has made on his mrigan/k8s_pm_update branches in daqconf, daqsystemtest, and drunc, and they are needed to restore the ability to successfully run multiple simultaneous regression tests on a single computer.

To test the changes, you should create a software area with Michal's changes included, then start up two Linux sessions and start regression tests at the same time in each of them.

Type of change

• Documentation (non-breaking change that adds or improves the documentation)
• New feature or enhancement (non-breaking change which adds functionality)
• Optimization (non-breaking change that improves code/performance)
• Bug fix (non-breaking change which fixes an issue)
• Breaking change (whatever its nature)

Testing checklist

• Unit tests pass (e.g. dbt-build --unittest)
• Minimal system quicktest passes (pytest -s minimal_system_quick_test.py)
• Full set of integration tests pass (daqsystemtest_integtest_bundle.sh)
• Python tests pass if applicable (e.g. python -m pytest)
• Pre-commit hooks run successfully if applicable (e.g. pre-commit run --all-files)

Further checks

• Code is commented where needed, particularly in hard-to-understand areas
• Code style is correct (dbt-build --lint, and/or see https://dune-daq-sw.readthedocs.io/en/latest/packages/styleguide/)
• If applicable, new tests have been added or an issue has been opened to tackle that in the future.

Correlated Changes

• K8s Process manager update (after cluster changes) drunc#657
• K8s Process manager update (after cluster changes)  daqconf#608
• K8s Process manager update (after cluster changes)  daqsystemtest#260

[MRiganSUSX]

Thanks for this addition.