In order to support a more clever algorithm for the DS to choose his RS, 
we introduce:



- a weigth, which is an integer affected to each RS that combined with 
each others will define a percentage value which matches the number of 
DSs (compared with total number od DSs in the topology) that can be 
connected to the RS at a time in the topology. In these modif, this 
configuration of the weight is added as well as dynamic changes. Also 
transported in Topo messages. No modification of the connection 
algorithm yet



- Also to support the future connection algorithm, these modifs 
introduces a Monitoring Publisher thread which is a thread that sens 
every 3 seconds a Monitoring message (unchanged format) to every DSs 
that are connected to him. These information will be used by the DSs to 
potentially reconnect to another RSs with a newer server state (info 
included in monitoring messages)



The new connection algorithm will take into account:

- group id

- generation id

- server states

- locality (same VM)

- weight (load)