p.haul: ignore existing old/obsoleted active delta files for ploop disks
p.haul: ignore existing old/obsoleted active delta files for ploop disks

Ease ploop disks check on destination side - don't fail if
old/obsoleted active delta files exist during migration of Virtuozzo
containers. ploop library ignore such files and overwrite them.

This is needed for migration over existing directory. In this mode
vzmigrate reuse existing on destination static data of container
left there by previously failed migration runs.

Signed-off-by: Nikita Spiridonov <e2c2785991de10f66b050593578d4296c6c8705d@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@virtuozzo.com>

arthurlockman/p.haul,arthurlockman/p.haul,arthurlockman/p.haul,aburluka/p.haul,xemul/p.haul,xemul/p.haul,jne100/p.haul,xemul/p.haul,aburluka/p.haul,aburluka/p.haul,arthurlockman/p.haul,jne100/p.haul,aburluka/p.haul,jne100/p.haul,jne100/p.haul,jne100/p.haul,xemul/p.haul,aburluka/p.haul,xemul/p.haul,arthurlockman/p.haul