CHANGELOG: Add 3.4 changelog entries for snapshot file permissions change
CHANGELOG: Add 3.4 changelog entries for snapshot file permissions change

dannysauer/etcd,etcd-io/etcd,gyuho/etcd,sinsharat/etcd,cockroachdb/etcd,joshix/etcd,mqliang/etcd,mqliang/etcd,vimalk78/etcd,mkumatag/etcd,sinsharat/etcd,ajityagaty/etcd,rnaveiras/etcd,mkumatag/etcd,xiang90/etcd,xiang90/etcd,ajityagaty/etcd,dannysauer/etcd,mqliang/etcd,ajityagaty/etcd,li-ang/etcd,rnaveiras/etcd,joshix/etcd,mkumatag/etcd,etcd-io/etcd,rnaveiras/etcd,coreos/etcd,cockroachdb/etcd,etcd-io/etcd,vimalk78/etcd,coreos/etcd,li-ang/etcd,gyuho/etcd