Signed-off-by: bruceauyeung <ouyang.qinhua@zte.com.cn>

rename variables to make sure that they conform to golang variable name convention

pkg/kubectl/cmd/cmd.go

@@ -35,7 +35,7 @@ import (
 )
 
 const (
-	bash_completion_func = `# call kubectl get $1,
+	bashCompletionFunc = `# call kubectl get $1,
 __kubectl_override_flag_list=(kubeconfig cluster user context namespace server)
 __kubectl_override_flags()
 {
@@ -199,7 +199,7 @@ __custom_func() {
 	// If you add a resource to this list, please also take a look at pkg/kubectl/kubectl.go
 	// and add a short forms entry in expandResourceShortcut() when appropriate.
 	// TODO: This should be populated using the discovery information from apiserver.
-	valid_resources = `Valid resource types include:
+	validResources = `Valid resource types include:
 
     * all
     * certificatesigningrequests (aka 'csr')
@@ -260,7 +260,7 @@ func NewKubectlCommand(f cmdutil.Factory, in io.Reader, out, err io.Writer) *cob
 
       Find more information at https://github.com/kubernetes/kubernetes.`),
 		Run: runHelp,
-		BashCompletionFunction: bash_completion_func,
+		BashCompletionFunction: bashCompletionFunc,
 	}
 
 	f.BindFlags(cmds.PersistentFlags())