Merge pull request #270 from Lion-Wei/fix-version

fix node-problem-detector --version to not require monitors specify

cmd/node_problem_detector.go

@@ -60,15 +60,15 @@ func main() {
 
 	pflag.Parse()
 
-	npdo.SetNodeNameOrDie()
-
-	npdo.ValidOrDie()
-
 	if npdo.PrintVersion {
 		version.PrintVersion()
 		os.Exit(0)
 	}
 
+	npdo.SetNodeNameOrDie()
+
+	npdo.ValidOrDie()
+
 	monitors := make(map[string]types.Monitor)
 	for _, config := range npdo.SystemLogMonitorConfigPaths {
 		if _, ok := monitors[config]; ok {