storage: dir: .wipeVol is left unsupported for ploop volume
storage: dir: .wipeVol is left unsupported for ploop volume

Returns error in case of vol-wipe cmd for a ploop volume

Signed-off-by: Olga Krishtal <6ab40c8ce88e23ce184acbfdab82214e3fc33e97@virtuozzo.com>

datto/libvirt,fabianfreyer/libvirt,VenkatDatta/libvirt,fabianfreyer/libvirt,zippy2/libvirt,nertpinx/libvirt,olafhering/libvirt,taget/libvirt,VenkatDatta/libvirt,eskultety/libvirt,jfehlig/libvirt,libvirt/libvirt,nertpinx/libvirt,jfehlig/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,eskultety/libvirt,andreabolognani/libvirt,datto/libvirt,nertpinx/libvirt,andreabolognani/libvirt,eskultety/libvirt,olafhering/libvirt,zippy2/libvirt,jardasgit/libvirt,jardasgit/libvirt,libvirt/libvirt,fabianfreyer/libvirt,libvirt/libvirt,taget/libvirt,olafhering/libvirt,andreabolognani/libvirt,datto/libvirt,datto/libvirt,datto/libvirt,crobinso/libvirt,crobinso/libvirt,jardasgit/libvirt,VenkatDatta/libvirt,jfehlig/libvirt,crobinso/libvirt,taget/libvirt,nertpinx/libvirt,olafhering/libvirt,fabianfreyer/libvirt,taget/libvirt,zippy2/libvirt,andreabolognani/libvirt,jfehlig/libvirt,libvirt/libvirt,VenkatDatta/libvirt,eskultety/libvirt,VenkatDatta/libvirt,nertpinx/libvirt,crobinso/libvirt,eskultety/libvirt,andreabolognani/libvirt,jardasgit/libvirt,zippy2/libvirt,taget/libvirt