Update the test architecture to handle JSON config

lustrec_tests/minimal_tests_O2/Abs1_PP.LUSTREC.lus

lustrec_tests/minimal_tests_O2/Assignment1.LUSTREC.lus

...rec_tests/minimal_tests_O2/BitwiseXOR_int8_PP.LUSTREC.lus

lustrec_tests/minimal_tests_O2/Clock_PP.LUSTREC.lus

lustrec_tests/minimal_tests_O2/ForEach1_PP.LUSTREC.lus

...sts/minimal_tests_O2/LookupTable1D_2points_PP.LUSTREC.lus

lustrec_tests/minimal_tests_O2/Product1.LUSTREC.lus

lustrec_tests/minimal_tests_O2/SYNAPSE_1.lus

lustrec_tests/minimal_tests_O2/UnitDelay_PP.LUSTREC.lus

lustrec_tests/minimal_tests_O2/_6counter.lus

lustrec_tests/minimal_tests_O2/clocks1.lus

lustrec_tests/minimal_tests_O2/dune

lustrec_tests/minimal_tests_O2/hysteresis_1.lus

lustrec_tests/minimal_tests_O2/ignored

lustrec_tests/minimal_tests_O2/inv_M_2x2.LUSTREC.lus

lustrec_tests/minimal_tests_O2/two_counters.lus

lustrec_tests/minimal_tests_O3/Abs1_PP.LUSTREC.lus

lustrec_tests/minimal_tests_O3/Assignment1.LUSTREC.lus

...rec_tests/minimal_tests_O3/BitwiseXOR_int8_PP.LUSTREC.lus

lustrec_tests/minimal_tests_O3/Clock_PP.LUSTREC.lus