qemuDomainCreateNamespace: move mkdir to qemuDomainBuildNamespace
qemuDomainCreateNamespace: move mkdir to qemuDomainBuildNamespace

Again, there is no need to create /var/lib/libvirt/$domain.*
directories in CreateNamespace(). It is sufficient to create them
as soon as we need them which is in BuildNamespace. This way we
don't leave them around for the whole lifetime of domain.

Signed-off-by: Michal Privoznik <83d82aaba2eed257f4814b0c239c260c4caaadf0@redhat.com>

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