* trilinos: update hdf5 dependency to use 'hdf5+hl'
Without this change - I get the following error [triggered by 161dca6d5c9810f808 changes]
$ ./bin/spack install trilinos+hdf5
==> Error: An unsatisfiable variant constraint has been detected for spec:
hdf5@1.10.1%gcc@7~cxx~debug~fortran~hl+mpi+pic+shared~szip~threadsafe arch=linux-fedora27-x86_64
while trying to concretize the partial spec:
netcdf+mpi
^m4
^mpich@3.3a2%gcc@7 device=ch3 +hydra netmod=tcp +pmi+romio~verbs arch=linux-fedora27-x86_64
^zlib@1.2.11%gcc@7+optimize+pic+shared arch=linux-fedora27-x86_64
netcdf requires hdf5 variant +hl, but spec asked for ~hl
* fix flake8 warning
dc78e60c83