NEWS: add v3.2.8
NEWS: add v3.2.8

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

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