Merge pull request kubernetes#82348 from jpbetz/kubeadm-etcd-image-tag

Use etcd image version suffixes in kubeadm

Author: k8s-ci-robot

cmd/kubeadm/app/constants/constants.go

@@ -260,7 +260,7 @@ const (
 	MinExternalEtcdVersion = "3.2.18"
 
 	// DefaultEtcdVersion indicates the default etcd version that kubeadm uses
-	DefaultEtcdVersion = "3.3.15"
+	DefaultEtcdVersion = "3.3.15-0"
 
 	// PauseVersion indicates the default pause image version for kubeadm
 	PauseVersion = "3.1"
@@ -424,8 +424,8 @@ var (
 		13: "3.2.24",
 		14: "3.3.10",
 		15: "3.3.10",
-		16: "3.3.15",
-		17: "3.3.15",
+		16: "3.3.15-0",
+		17: "3.3.15-0",
 	}
 
 	// KubeadmCertsClusterRoleName sets the name for the ClusterRole that allows