shutdown server/cluster command documentation need to show the consequence for the next start

If CLI use shudown

• server <list>
  • it will stop the connected node if there is no <list>
  • it will stop all servers in that list
  • !! it will not respect any rebalancing, so it is possible to lose data !!
• cluster
  • All nodes registered in this cluster will go down
  • The curent state is persisted and the members are marked as last stable
  • ALL nodes are needed for the next starup !!
    • the cluster is in DEGRADED state until all nodes are back
    • no new node will able to join
    • become available after all nodes are back and ready
    • !! remove state of one node and the cluster will not become available !!
    • Current there is no way to recover from that and start the cluster (incomplete). The data direcory must be cleared and all data is lost

This should be clearly documented!