functional-tester: enable "--pre-vote"

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

tools/functional-tester/etcd-tester/cluster.go

@@ -82,7 +82,7 @@ func (c *cluster) bootstrap() error {
 			m.Flags(),
 			"--initial-cluster-token", token,
 			"--initial-cluster", clusterStr,
-			"--snapshot-count", "10000")
+		)
 
 		if _, err := m.Agent.Start(flags...); err != nil {
 			// cleanup

tools/functional-tester/etcd-tester/member.go

@@ -49,6 +49,8 @@ func (m *member) Flags() []string {
 		"--listen-peer-urls", m.PeerURL,
 		"--initial-advertise-peer-urls", m.AdvertisePeerURL,
 		"--initial-cluster-state", "new",
+		"--snapshot-count", "10000",
+		"--pre-vote",
 		"--experimental-initial-corrupt-check",
 	}
 }
@@ -76,7 +78,7 @@ func (m *member) CheckCompact(rev int64) error {
 }
 
 func (m *member) Defrag() error {
-	plog.Printf("defragmenting %s\n", m.AdvertiseClientURL)
+	plog.Printf("defragmenting %s", m.AdvertiseClientURL)
 	cli, err := m.newClientV3()
 	if err != nil {
 		return err
@@ -88,7 +90,7 @@ func (m *member) Defrag() error {
 	if err != nil {
 		return err
 	}
-	plog.Printf("defragmented %s\n", m.AdvertiseClientURL)
+	plog.Printf("defragmented %s", m.AdvertiseClientURL)
 	return nil
 }