in regressiontests, wrong Modelica syntax should cause test to fail

[mwetter]

The following command issues only a warning but passes the CI tests:

git checkout 7d19454c6fc00f0fc8738a875f7bbeda56ac4358
cd Buildings
../bin/runUnitTests.py -t optimica -s Buildings.ThermalZones.Detailed.Validation --skip-verification

The warning is

*** Warning: Buildings.ThermalZones.Detailed.Validation.SingleZoneFloorWithHeating: The 'each' keyword should not be applied to a modification of a scalar component: each p = 273.15+10
*** Warning: Buildings.ThermalZones.Detailed.Validation.SingleZoneFloorWithHeating: The 'each' keyword should not be applied to a modification of a scalar component: each k = 20

Number of models with 'each' keyword applied to scalar          : 2

The expected behavior is that the CI test should fail.