- ControlSystemModule
- VirtualModule
- findTag
- excludeTag

and some related functions.

Modernise interface of status monitors and add tests of initial value propagation and data validity propagation (#8279). Improve code formating/readability.

- tests still failing
- modifications incomplete
- cleanup needed

- Replaced all of them with normal DUMMY_WRITEABLE registers.

- fixed that ConsumingFanOut is propagating the data to the slaves in case of exceptions
- /testPropagateDataFaultFlag currently passing (still commented sections)

- activated some tests which were commented out in testPropagateDataFaultFlag
- data validity propagation still failing. Only the data content is working until now.

Adapt test sequence of testDataFlowOnDeviceException to new spec.

Apapt test sequences of testDeviceReadFailure and
testDataValidPropagationOnException according to new data validity and
exception handling specifications.

Also fixes data race on runApplication in the constructor of
data_validity_propagation_noTestFacility test suite.

- All accessors come up in exception state.
- Read-accessors increase counter in init phase

Assertion is gone, but tests still failing

This is not correlated to the new feature implemented in this branch. It
was needed to compile this version.

Test propagation of data validity and exception in the same cycle

Fix changes broken by renaming to ExceptionDummyBackend in DeviceAccess.

Changes should address timing related failures in the tests.

Fixture teardown functions now ensure the device dummybackends do no
throw on read or write.

activated tests for exception flag propagation with direct connection Device->ApplicationModule (part of #102)

- testInvalidTrigger
- testDeviceReadFailure
- testreadDeviceWithTrigger
- testConsumingFanout
- testDataFlowOnDeviceException

- device1 -> device1DummyBackend.
- device2 -> device2DummyBackend.