Non-blocking - this is fine as is, I'm just sharing a concern since we had mentioned slower tests.

Since this is testing that each operation does not affect the existing nodes on the LB, would it make sense to leave out testing that the new servers get added to the LB, since this is tested elsewhere?  That way we may not have to wait for the servers to spin up.

I guess it may be valid to check to that the servers finish building, the old nodes aren't removed from the LB, but perhaps that only has to be done for either the group creation or the scale up, rather than both?