Cluster Connections Improved

Cluster commands now operate at CLUSTER priority, giving the packets higher status than HIGH which otherwise has caused issues during massive disconnects. New Configuration options come with this change. The first being able to change the number of connections for CLUSTER packets using the following init.property setting:

cl-comp/cluster-sys-connections-per-node[I]=2

Also a new class which implements the a new connection selection interface, but uses the old mechanism where any connection can send any command.

cl-comp/connection-selector=tigase.cluster.ClusterConnectionSelectorOld