702ff41471
'format' can be 'plain', 'pxar', 'zip' or 'tar', and it returns the content in the given format (with fallback to the old behaviour if not given) the 'zstd' denotes if the output should be zstd compressed Signed-off-by: Dominik Csapak <d.csapak@proxmox.com> Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>