Changed test cases (now smaller tests and more)

source/KKRhost/.gitlab-ci.yml

source/KKRhost/ALL_SOURCE_FILES/main1a.F90

source/KKRhost/CMakeLists.txt

source/KKRhost/tests/run_multi_node.py

source/KKRhost/tests/run_parallel.py

source/KKRhost/tests/run_serial.py

source/KKRhost/tests/test_inputs/test_01.1/inputcard

source/KKRhost/tests/test_inputs/test_01.1/potential

source/KKRhost/tests/test_inputs/test_01.1/shapefun

...t_inputs/test_01_fcc_Au_4_atom_bulk_lmax2_noSOC/inputcard

...t_inputs/test_01_fcc_Au_4_atom_bulk_lmax2_noSOC/potential

...st_inputs/test_01_fcc_Au_4_atom_bulk_lmax2_noSOC/shapefun

source/KKRhost/tests/test_inputs/test_02.1/inputcard

source/KKRhost/tests/test_inputs/test_02.1/potential

source/KKRhost/tests/test_inputs/test_02.1/shapefun

.../test_02_bcc_Fe_1_2_1_atom_slab_lmax2_noSOC_mag/inputcard

.../test_02_bcc_Fe_1_2_1_atom_slab_lmax2_noSOC_mag/potential

...s/test_02_bcc_Fe_1_2_1_atom_slab_lmax2_noSOC_mag/shapefun

source/KKRhost/tests/test_inputs/test_03.1/inputcard

source/KKRhost/tests/test_inputs/test_03.1/potential