fix golint errors in pkg/routes

Signed-off-by: William Zhang <zhang.wanmin@zte.com.cn>

hack/.golint_failures

@@ -336,7 +336,6 @@ pkg/registry/settings/rest
 pkg/registry/storage/rest
 pkg/registry/storage/storageclass
 pkg/registry/storage/storageclass/storage
-pkg/routes
 pkg/scheduler/apis/config/v1alpha1
 pkg/security/apparmor
 pkg/security/podsecuritypolicy

pkg/routes/logs.go

@@ -26,6 +26,7 @@ import (
 // Logs adds handlers for the /logs path serving log files from /var/log.
 type Logs struct{}
 
+// Install func registers the logs handler.
 func (l Logs) Install(c *restful.Container) {
 	// use restful: ws.Route(ws.GET("/logs/{logpath:*}").To(fileHandler))
 	// See github.com/emicklei/go-restful/blob/master/examples/restful-serve-static.go