tests: Gossip around node load info
tests: Gossip around node load info

$ ./gossip --seed 127.0.0.1  --listen-address 127.0.0.1
$ ./gossip --seed 127.0.0.1  --listen-address 127.0.0.2
$ ./gossip --seed 127.0.0.1  --listen-address 127.0.0.3

After a few seconds, all the 3 nodes will know each other's load info
by gossip.

----------- endpoint_state_map dump beg -----------
ep=127.0.0.1, eps=EndpointState: HeartBeatState = generation = 1, version = 0, AppStateMap =  { 1 : Value(0.5,1) }
ep=127.0.0.2, eps=EndpointState: HeartBeatState = generation = 1, version = 0, AppStateMap =  { 1 : Value(0.5,1) }
ep=127.0.0.3, eps=EndpointState: HeartBeatState = generation = 1, version = 0, AppStateMap =  { 1 : Value(0.5,1) }
----------- endpoint_state_map dump end -----------

tempbottle/scylla,capturePointer/scylla,senseb/scylla,phonkee/scylla,scylladb/scylla,wildinto/scylla,glommer/scylla,dwdm/scylla,justintung/scylla,raphaelsc/scylla,gwicke/scylla,respu/scylla,victorbriz/scylla,gwicke/scylla,tempbottle/scylla,glommer/scylla,asias/scylla,duarten/scylla,asias/scylla,linearregression/scylla,asias/scylla,guiquanz/scylla,kangkot/scylla,capturePointer/scylla,shaunstanislaus/scylla,avikivity/scylla,guiquanz/scylla,stamhe/scylla,acbellini/scylla,scylladb/scylla,acbellini/scylla,justintung/scylla,rluta/scylla,kjniemi/scylla,gwicke/scylla,bowlofstew/scylla,shaunstanislaus/scylla,rentongzhang/scylla,rentongzhang/scylla,duarten/scylla,phonkee/scylla,phonkee/scylla,eklitzke/scylla,bowlofstew/scylla,justintung/scylla,linearregression/scylla,rentongzhang/scylla,avikivity/scylla,kangkot/scylla,kjniemi/scylla,senseb/scylla,duarten/scylla,linearregression/scylla,scylladb/scylla,kangkot/scylla,aruanruan/scylla,rluta/scylla,acbellini/scylla,raphaelsc/scylla,dwdm/scylla,bowlofstew/scylla,eklitzke/scylla,shaunstanislaus/scylla,avikivity/scylla,tempbottle/scylla,respu/scylla,scylladb/scylla,victorbriz/scylla,wildinto/scylla,senseb/scylla,dwdm/scylla,respu/scylla,victorbriz/scylla,rluta/scylla,stamhe/scylla,aruanruan/scylla,kjniemi/scylla,glommer/scylla,eklitzke/scylla,stamhe/scylla,wildinto/scylla,capturePointer/scylla,aruanruan/scylla,raphaelsc/scylla,guiquanz/scylla