MPI fixups

9 jobs for linearizationtests in 8 minutes and 10 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build Docker
passed #895116
build_docker_from_cache

00:00:22

 
  Test
passed #895118
test_mpi

00:04:10

passed #895117
test_serial

00:04:47

81.0%
 
  Demo Runs
passed #895123
run_bernoulli

00:00:28

passed #895124
run_curve_fitting

00:00:26

passed #895120
run_getting_started_1

00:00:31

passed #895121
run_getting_started_2

00:01:09

passed #895122
run_getting_started_3

00:02:59

passed #895119
run_ipynb

00:01:22