include hdf5 and netcdf in more images

tools/singularity/centos8.def

@@ -9,6 +9,7 @@ From: centos:8
                ccache gcc-c++ gcc-gfortran clang gdb valgrind libubsan libasan libtsan \
                eigen3-devel openblas-devel libpng-devel libjpeg-devel platform-python-devel \
                openmpi-devel mpich-devel fftw-devel voro++-devel gsl-devel hdf5-devel \
+               netcdf-devel netcdf-cxx-devel netcdf-mpich-devel netcdf-openmpi-devel \
                enchant python3-virtualenv doxygen \
                texlive-latex-fonts texlive-pslatex texlive-collection-latexrecommended \
                texlive-latex texlive-latexconfig doxygen-latex texlive-collection-latex \