CHANGELOG-3.4: add JWT ttl field, defrag --cluster changes
CHANGELOG-3.4: add JWT ttl field, defrag --cluster changes

Signed-off-by: Gyuho Lee <3454051ee3341eb69bdf6fca40899cdad4d86496@gmail.com>

etcd-io/etcd,bdarnell/etcd,xiang90/etcd,coreos/etcd,lorneli/etcd,xiang90/etcd,mqliang/etcd,dannysauer/etcd,joshix/etcd,etcd-io/etcd,sebrandon1/etcd,sinsharat/etcd,sebrandon1/etcd,sinsharat/etcd,mqliang/etcd,coreos/etcd,fanminshi/etcd,vimalk78/etcd,mkumatag/etcd,ajityagaty/etcd,mkumatag/etcd,cockroachdb/etcd,gyuho/etcd,mkumatag/etcd,glevand/coreos--etcd,cockroachdb/etcd,joshix/etcd,ajityagaty/etcd,ajityagaty/etcd,li-ang/etcd,gyuho/etcd,lorneli/etcd,rnaveiras/etcd,mqliang/etcd,bdarnell/etcd,glevand/coreos--etcd,fanminshi/etcd,rnaveiras/etcd,rnaveiras/etcd,vimalk78/etcd,dannysauer/etcd,li-ang/etcd,etcd-io/etcd