Add scripts for running tests with different granularity under gdb and mpi repeatedly for debugging for deadlocks.
Use fixture for parameterization in new test.
Add back verbose output to pytest targets in cmakelists, we may need this info on the buildbot. Probably possible to make pytest dump this to log files which would be better.
Edits to the mpi test running scripts.
Minor edits in mpi running scripts.
Merge branch 'martinal/topic-mpi-test-debugging' into next
Disable test_ident_zeros in parallel to see if this makes the tests stabilize on the buildbot.
Merge branch 'martinal/topic-mpi-test-debugging' into next