changed number of mpiranks in tests 5 -> 4.

4 jobs for mpitests in 7 minutes and 46 seconds (queued for 1 second)
Status Name Job ID Coverage
  Test
passed test_min #209447

00:03:05

passed test_mpi #209448

00:04:28

passed test_mpi_fftw #209449

00:05:07

failed test_mpi_fftw_hdf5 #209450

00:07:45

 
Name Stage Failure
failed
test_mpi_fftw_hdf5 Test There is an unknown failure, please try again
No job log