always run MPI tests

4 jobs for yango_minimizer in 25 minutes and 46 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Test
passed #539507
test_python2_mpi

00:25:23

passed #539505
test_python2_scalar

00:03:24

67.0%
passed #539508
test_python3_mpi

00:25:46

passed #539506
test_python3_scalar

00:02:23