qemu: Clear autofil fill flag when pinning iothread
qemu: Clear autofil fill flag when pinning iothread

https://bugzilla.redhat.com/show_bug.cgi?id=1218577

Treat pinning an IOThread via API as if someone added an IOThread to
ensure the iothreadid doesn't cause the guest to disappear

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