The command introduced here is just for developers. This means that:

- the interface implemented here could change in the future
- the command is only meant to be used from HMP, not from QMP
Reviewed-by: NDr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: NEmilio G. Cota <cota@braap.org>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>