Add generated file

This PR adds generated files under pkg/client and vendor folder.

vendor/k8s.io/kubernetes/cmd/kubeadm/app/preflight/utils.go

@@ -0,0 +1,44 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package preflight
+
+import (
+	"fmt"
+	"regexp"
+	"strings"
+
+	"k8s.io/kubernetes/pkg/util/version"
+	utilsexec "k8s.io/utils/exec"
+)
+
+// GetKubeletVersion is helper function that returns version of kubelet available in $PATH
+func GetKubeletVersion(execer utilsexec.Interface) (*version.Version, error) {
+	kubeletVersionRegex := regexp.MustCompile(`^\s*Kubernetes v((0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)([-0-9a-zA-Z_\.+]*)?)\s*$`)
+
+	command := execer.Command("kubelet", "--version")
+	out, err := command.CombinedOutput()
+	if err != nil {
+		return nil, err
+	}
+
+	cleanOutput := strings.TrimSpace(string(out))
+	subs := kubeletVersionRegex.FindAllStringSubmatch(cleanOutput, -1)
+	if len(subs) != 1 || len(subs[0]) < 2 {
+		return nil, fmt.Errorf("Unable to parse output from Kubelet: %q", cleanOutput)
+	}
+	return version.ParseSemantic(subs[0][1])
+}