Systems->Servers does not indicate the correct server state
The page Systems->Servers in the new AdminUI claims, however, that all servers are working properly, which is not the correct (they indeed are offline).
This change is to mark the server offline when half of the job producersservices are marked offline. This is to make sure that if a node is unable to stop normally then it will still be marked offline in the ui by the other servers. Non job producer services aren't marked offline by other nodes.