make cluster.yml optional in --local

cluster/local.go

@@ -0,0 +1,33 @@
+package cluster
+
+import (
+	"github.com/rancher/rke/services"
+	"github.com/rancher/types/apis/management.cattle.io/v3"
+)
+
+func GetLocalRKEConfig() *v3.RancherKubernetesEngineConfig {
+	rkeLocalNode := GetLocalRKENodeConfig()
+	rkeServices := v3.RKEConfigServices{
+		Kubelet: v3.KubeletService{
+			BaseService: v3.BaseService{
+				Image:     DefaultK8sImage,
+				ExtraArgs: map[string]string{"fail-swap-on": "false"},
+			},
+		},
+	}
+	return &v3.RancherKubernetesEngineConfig{
+		Nodes:    []v3.RKEConfigNode{*rkeLocalNode},
+		Services: rkeServices,
+	}
+
+}
+
+func GetLocalRKENodeConfig() *v3.RKEConfigNode {
+	rkeLocalNode := &v3.RKEConfigNode{
+		Address:          LocalNodeAddress,
+		HostnameOverride: LocalNodeHostname,
+		User:             LocalNodeUser,
+		Role:             []string{services.ControlRole, services.WorkerRole, services.ETCDRole},
+	}
+	return rkeLocalNode
+}