Update Gitlab pipelines

[davschneller]

Makes the Gitlab pipelines work.

Internally, we moved the CPU pipeline to the SCCS CI node now.

Also, the single stages are now using different node configurations.

But still, right now there are dependencies of the CPU version to be build with the respective CPU features (due to the doctest CMake script requiring them—I might file an issue for that; and the GPU version needs a CUDA runtime available which may become dificult, for now)

[krenzland]

But still, right now there are dependencies of the CPU version to be build with the respective CPU features (due to the doctest CMake script requiring them—I might file an issue for that; and the GPU version needs a CUDA runtime available which may become dificult, for now)

What features exactly?

[davschneller]

But still, right now there are dependencies of the CPU version to be build with the respective CPU features (due to the doctest CMake script requiring them—I might file an issue for that; and the GPU version needs a CUDA runtime available which may become dificult, for now)

What features exactly?

AVX or AVX2—when compiling on a Westmere CPU with optimizations targeting Haswell, they cause a Sigill quickly. Doctest executes the serial test file once—which may be compiled for the target architectures.

[davschneller]

Cf. here:

SeisSol/cmake/doctestAddTests.cmake

Lines 36 to 40 in e6ef661

	execute_process(
	COMMAND ${TEST_EXECUTOR} "${TEST_EXECUTABLE}" ${spec} --list-test-cases
	OUTPUT_VARIABLE output
	RESULT_VARIABLE result
	)

[krenzland]

Ah, but I think that is the intended behavior... :(