[libvirt] virsh bash completion file

[Serge E. Hallyn]

Quoting Eric Blake (eblake at redhat.com):
> While I'd love to see better bash completion support, I think that
> we should be going about it by fixing virsh to make it easier to
> query what completions make sense, so I'm not going to spend much
> time further reviewing this.  Of course, others are free to use this

Thanks, Eric, makes sense.

-serge