update based on comments

Author: juzhao

test/extended/prometheus/prometheus.go

@@ -529,13 +529,10 @@ var _ = g.Describe("[sig-instrumentation][Late] Alerts", func() {
 		// we only consider series sent since the beginning of the test
 		testDuration := exutil.DurationSinceStartInSeconds().String()
 
-		var averageSeriesLimit int
-		averageSeriesLimit = 1000
-
 		tests := map[string]bool{
 			// We want to limit the number of total series sent, the cluster:telemetry_selected_series:count
 			// rule contains the count of the all the series that are sent via telemetry. It is permissible
-			// for some scenarios to generate more series than 1000, we just want the basic state to be below
+			// for some scenarios to generate more series than the limit, we just want the basic state to be below
 			// a threshold.
 
 			// The following query can be executed against the telemetry server
@@ -550,8 +547,8 @@ var _ = g.Describe("[sig-instrumentation][Late] Alerts", func() {
 			//     )[30m:1m]
 			//   )
 			// )
-			fmt.Sprintf(`avg_over_time(cluster:telemetry_selected_series:count[%s]) >= %d`, testDuration, averageSeriesLimit): false,
-			fmt.Sprintf(`max_over_time(cluster:telemetry_selected_series:count[%s]) >= 1200`, testDuration):                   false,
+			fmt.Sprintf(`avg_over_time(cluster:telemetry_selected_series:count[%s]) >= 1000`, testDuration): false,
+			fmt.Sprintf(`max_over_time(cluster:telemetry_selected_series:count[%s]) >= 1200`, testDuration): false,
 		}
 		err := helper.RunQueries(context.TODO(), oc.NewPrometheusClient(context.TODO()), tests, oc)
 		o.Expect(err).NotTo(o.HaveOccurred())