adjust to new gridder interface

9 jobs for PowerGrid in 3 minutes and 24 seconds (queued for 1 second)
Status Name Job ID Coverage
  Build Docker
passed build_docker_from_cache #818909

00:00:15

 
  Test
canceled test_mpi #818911

00:03:09

canceled test_serial #818910

00:03:09

 
  Demo Runs
canceled run_bernoulli #818916

canceled run_curve_fitting #818917

canceled run_getting_started_1 #818913

canceled run_getting_started_2 #818914

canceled run_getting_started_3 #818915

canceled run_ipynb #818912