migration_is_setup_or_active Add 'migration_is_setup_or_active' utility function to check state. (It gets postcopy added to it's list later on in the series) Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>