qemu: hotplug: Reuse qemuDomainAttachDiskGeneric in qemuDomainAttachSCSIDisk
qemu: hotplug: Reuse qemuDomainAttachDiskGeneric in qemuDomainAttachSCSIDisk

Get rid of the first copy of the mess.

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