set FileCheckFrequency default properly

Author: sjenning

pkg/cmd/server/kubernetes/node/options/options.go

@@ -31,7 +31,7 @@ func ComputeKubeletFlags(startingArgs map[string][]string, options configapi.Nod
 	imageTemplate.Latest = options.ImageConfig.Latest
 
 	path := ""
-	var fileCheckInterval int64
+	fileCheckInterval := int64(20)
 	if options.PodManifestConfig != nil {
 		path = options.PodManifestConfig.Path
 		fileCheckInterval = options.PodManifestConfig.FileCheckIntervalSeconds