Add unit test for md.pair.lj1208 (duplicated from test_pair_lj.py)
Add unit test for md.pair.lj1208 (duplicated from test_pair_lj.py)

joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue