p4est: put back +tests variant
p4est: put back +tests variant

mfherbst/spack,LLNL/spack,lgarren/spack,mfherbst/spack,matthiasdiener/spack,TheTimmy/spack,lgarren/spack,iulian787/spack,krafczyk/spack,skosukhin/spack,tmerrick1/spack,EmreAtes/spack,TheTimmy/spack,skosukhin/spack,mfherbst/spack,EmreAtes/spack,iulian787/spack,LLNL/spack,tmerrick1/spack,krafczyk/spack,EmreAtes/spack,matthiasdiener/spack,krafczyk/spack,krafczyk/spack,tmerrick1/spack,matthiasdiener/spack,iulian787/spack,EmreAtes/spack,LLNL/spack,skosukhin/spack,tmerrick1/spack,TheTimmy/spack,TheTimmy/spack,skosukhin/spack,iulian787/spack,tmerrick1/spack,LLNL/spack,mfherbst/spack,lgarren/spack,lgarren/spack,iulian787/spack,matthiasdiener/spack,EmreAtes/spack,krafczyk/spack,mfherbst/spack,matthiasdiener/spack,LLNL/spack,lgarren/spack,skosukhin/spack,TheTimmy/spack