etcdserver: Extract etcdserver boostrap function
etcdserver: Extract etcdserver boostrap function

coreos/etcd,mqliang/etcd,mkumatag/etcd,rnaveiras/etcd,gyuho/etcd,rnaveiras/etcd,mkumatag/etcd,mqliang/etcd,coreos/etcd,ajityagaty/etcd,etcd-io/etcd,ajityagaty/etcd,rnaveiras/etcd,mqliang/etcd,etcd-io/etcd,ajityagaty/etcd,mkumatag/etcd,gyuho/etcd,etcd-io/etcd