Merge pull request #220 from dlipovetsky/dlipovetsky/3.4.13

Set default etcd version to 3.4.13, current for Kubernetes 1.19, 1.20, and 1.21

Author: k8s-ci-robot

constants/constants.go

@@ -20,7 +20,7 @@ import "time"
 
 // Command-line flag defaults
 const (
-	DefaultVersion    = "3.4.9"
+	DefaultVersion    = "3.4.13"
 	DefaultInstallDir = "/opt/bin/"
 
 	DefaultReleaseURL     = "https://github.com/coreos/etcd/releases/download"