Preparing minimalistic binary package for CI (use of cpack and disabling modules)

Looking at the CMakeLists.txt of VTK, it seems only the StandAlone and Rendering groups are turned on by default, so maybe it would be enough with something like

cmake \
    -DVTK_GROUP_ENABLE_StandAlone=DONT_WANT \
    -DVTK_GROUP_ENABLE_Rendering=DONT_WANT \
    -DVTK_MODULE_ENABLE_<the_module_you_need>=ON

to get the minimal VTK you need.