resolves: rhbz#2059289
Suppress excess messages from nbdkit-nbd-plugin
resolves: rhbz#2083498
Suppress incorrect VDDK error when converting guests from vCenter
resolves: rhbz#2083617
Backport new LUKS filter from 1.32.
Add new Python binding for nbdkit_parse_size from 1.32
Cherry-picked from Fedora:
Add new luks filter.
(Fedora commit 9588e5cbc7)
Richard W.M. Jones