storage: Disallow wiping an extended disk partition
storage: Disallow wiping an extended disk partition

https://bugzilla.redhat.com/show_bug.cgi?id=1225694

Check if the disk partition to be wiped is the extended partition, if
so then disallow it. Do this via changing the wipeVol backend to check
the volume before passing to the common virStorageBackendVolWipeLocal

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