Comment 4 for bug 1790721

Ah I think I know what's happening, the else block on this for loop is busted:

https://github.com/openstack/nova/blob/5c6b22559d538e63543c38471e60aeb5c7867e8f/nova/cmd/status.py#L297

And that overwrites the num_computes value to 0 because there are no compute nodes in the cell0 databsae.