GROMACS

There seems to be an error when builgind Gromacs 2018.5 on Fedora for x86-64 architecture with OpenMPI 4:
https://koji.fedoraproject.org/koji/buildinfo?buildID=1209606
The GPU test fails. Most likely due to infrastructure choices, but may be an issue elsewhere.
Maybe worth setting up monitoring of GROMACS builds on Fedora and other similar platforms, could reduce
testing.