Try to be more clear about what those checkboxes do, hopefully
reducing potential confusion by (newer) users.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
The purge parameter is always explicitly set, which is different from the
existing behavior, but it does not rely on what the default in the backend is.
Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
