qemu: qemuDomainDiskChangeSupported: Add missing 'address' check
qemu: qemuDomainDiskChangeSupported: Add missing 'address' check

Disk->info is not live updatable so add a check for this. Otherwise
libvirt reports success even though no data was updated.

Signed-off-by: Marc Hartmayer <7bafc8cd4e6394916d396e4f8cde69753be8d066@linux.vnet.ibm.com>
Reviewed-by: Bjoern Walk <40545c009452f40d2ae0bbfbd987b332d274d328@linux.vnet.ibm.com>
Reviewed-by: Boris Fiuczynski <2648abdd55bfebf313fd324b464b047e6eea300e@linux.vnet.ibm.com>

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