Problem: flux-pmix is required by openmpi5, which means we should be testing openmpi5 on LC hardware.
Utilize modulefiles on Corona to test this. Since loading new modulefiles can cause unexpected behavior in tests for openmpi4, only load those modulefiles when openmpi5 is the requested MPI to test.
Problem: flux-pmix is required by openmpi5, which means we should be testing openmpi5 on LC hardware.
Utilize modulefiles on Corona to test this. Since loading new modulefiles can cause unexpected behavior in tests for openmpi4, only load those modulefiles when openmpi5 is the requested MPI to test.