pep8 fixes in test_simulation
pep8 fixes in test_simulation

kbarbary/sncosmo,kbarbary/sncosmo,dannygoldstein/sncosmo,dannygoldstein/sncosmo,sncosmo/sncosmo,sncosmo/sncosmo,sncosmo/sncosmo,kbarbary/sncosmo,dannygoldstein/sncosmo