Merge topic 'update_hdf5_2020_08_19' into release

dcea3aa8 Merge branch 'upstream-hdf5' into update_hdf5_2020_08_19
4c4129f4 hdf5 2020-08-18 (ef014c5a)
f8058796 Update hdf5 to for/vtk-20200818-1.10.6 branch

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Ben Boeckel <ben.boeckel@kitware.com>
Merge-request: !7174