Explicitly set etcd --snapshot-count to 10000 to match etcd 3.2 default

cluster/gce/manifests/etcd.manifest

@@ -45,6 +45,9 @@
       },
       { "name": "ETCD_CREDS",
         "value": "{{ etcd_creds }}"
+      },
+      { "name": "ETCD_SNAPSHOT_COUNT",
+        "value": "10000"
       }
         ],
     "livenessProbe": {

cmd/kubeadm/app/constants/constants.go

@@ -298,7 +298,7 @@ var (
 	SupportedEtcdVersion = map[uint8]string{
 		9:  "3.1.12",
 		10: "3.1.12",
-		11: "3.1.12",
+		11: "3.2.18",
 	}
 )
 

cmd/kubeadm/app/constants/constants_test.go

@@ -18,9 +18,10 @@ package constants
 
 import (
 	"fmt"
-	"k8s.io/kubernetes/pkg/util/version"
 	"strings"
 	"testing"
+
+	"k8s.io/kubernetes/pkg/util/version"
 )
 
 func TestGetStaticPodDirectory(t *testing.T) {

cmd/kubeadm/app/phases/etcd/local.go

@@ -88,6 +88,7 @@ func getEtcdCommand(cfg *kubeadmapi.MasterConfiguration) []string {
 		"peer-key-file":         filepath.Join(cfg.CertificatesDir, kubeadmconstants.EtcdPeerKeyName),
 		"peer-trusted-ca-file":  filepath.Join(cfg.CertificatesDir, kubeadmconstants.EtcdCACertName),
 		"peer-client-cert-auth": "true",
+		"snapshot-count":        "10000",
 	}
 
 	command := []string{"etcd"}