Added an integtest to verify correct running of the system when just a couple of TPG flags are turned off

[bieryAtFnal]

Description

At the 23-Mar-2026 NP02 DAQ Operations meeting, Michal mentioned a bug in appmodel that caused problems when testing candidate software for fddaq-v5.6.0. He asked why the bug had not been caught in regression testing. (slides 12 and 13 in this presentation)

This PR is for a new regression test that would have caught the problem. I propose that we add this integtest to our test suite in the hope of catching similar problems in the future.

Here are suggestions for reviewing this new test. They include a demonstration that the test would have caught the appmodel bug from March.

DATE_PREFIX=`date '+%d%b'`
TIME_SUFFIX=`date '+%H%M'`

source /cvmfs/dunedaq.opensciencegrid.org/setup_dunedaq.sh
setup_dbt latest
dbt-create -n NFD_DEV_260501_A9 ${DATE_PREFIX}FDDevTest_${TIME_SUFFIX}
cd ${DATE_PREFIX}FDDevTest_${TIME_SUFFIX}/sourcecode

git clone https://github.com/DUNE-DAQ/daqsystemtest.git -b kbiery/disabled_tpg_test
git clone https://github.com/DUNE-DAQ/appmodel -b develop
cd ..

dbt-workarea-env
dbt-build -j 12
dbt-workarea-env

dunedaq_integtest_bundle.sh -k disabled_tpg

echo ""
echo -e "\U1F535 \U2705 Note that the disabled_tpg_test worked fine with the latest appmodel code. \U2705 \U1F535"
echo ""
echo ""
sleep 3

cd sourcecode/appmodel
git checkout ba6d4d4
cd ../../

dbt-build -j 12
dbt-workarea-env

dunedaq_integtest_bundle.sh -k disabled_tpg

echo ""
echo -e "\U1F535 \U2705 Note that disabled_tpg_test reports lots of errors when run with the faulty appmodel code. \U2705 \U1F535"
echo ""
echo ""

Type of change

• New feature or enhancement (non-breaking change which adds functionality)

Testing checklist

• Minimal system quicktest passes (pytest -s minimal_system_quick_test.py)
• Full set of integration tests pass (dunedaq_integtest_bundle.sh)

Further checks

• Code is commented where needed, particularly in hard-to-understand areas