concurrent 메트릭에 location 레이블 추가

metric/metric.go

@@ -131,7 +131,7 @@ func init() {
 				logger.Println("metrics are going to be generated for houston")
 				go mc.metricWriter()
 				NewMetric = newMetricImpl
-				ConcurrentUser = NewMetric(MetricGuage, "concurrent_user", "concurrent user count", nil)
+				ConcurrentUser = NewMetric(MetricGuage, "concurrent_user", "concurrent user count", map[string]string{"location": "lobby"})
 			} else {
 				logger.Println("metrics are NOT going to be generated. parent is not houston :", filename, string(fn))
 			}