Besides the new variable addition, vfc_test_h5 has also be made simpler
by executing directly all the possible lagorithms (instead of requiring
argument). This results in a much more concise vfc_tests_config.json,
since only one executable invocation is required.
The vfc_ci tool has been directly added to the repository, since it's
not integrated into Verificarlo yet. The vfc_test_h5.cpp file defines a
test inspired by test_h5.cpp that reads a list of cycles and dump the
vfc_probes for these cycles.
