roachtest/tests: fix quantile value in tpce

Other tests emitting openmetrics emit quantiles in percentage rather
than absolute value. This change intends to make tpce also emit
percentage value to be more consistent will other roachtests

Epic: none

Release note: None

pkg/cmd/roachtest/tests/tpce.go

@@ -397,10 +397,10 @@ func getOpenMetrics(metrics tpceMetrics, countOfLatencies string, labelString st
 
 	buffer.WriteString("# TYPE tpce_latency summary\n")
 	buffer.WriteString("# HELP tpce_latency Latency metrics for TPC-E transactions\n")
-	buffer.WriteString(fmt.Sprintf("tpce_latency{%s,quantile=\"0.5\"} %s %d\n", labelString, metrics.P50Latency, now))
-	buffer.WriteString(fmt.Sprintf("tpce_latency{%s,quantile=\"0.9\"} %s %d\n", labelString, metrics.P90Latency, now))
-	buffer.WriteString(fmt.Sprintf("tpce_latency{%s,quantile=\"0.99\"} %s %d\n", labelString, metrics.P99Latency, now))
-	buffer.WriteString(fmt.Sprintf("tpce_latency{%s,quantile=\"1.0\"} %s %d\n", labelString, metrics.PMaxLatency, now))
+	buffer.WriteString(fmt.Sprintf("tpce_latency{%s,quantile=\"50.0\"} %s %d\n", labelString, metrics.P50Latency, now))
+	buffer.WriteString(fmt.Sprintf("tpce_latency{%s,quantile=\"90.0\"} %s %d\n", labelString, metrics.P90Latency, now))
+	buffer.WriteString(fmt.Sprintf("tpce_latency{%s,quantile=\"99.0\"} %s %d\n", labelString, metrics.P99Latency, now))
+	buffer.WriteString(fmt.Sprintf("tpce_latency{%s,quantile=\"100.0\"} %s %d\n", labelString, metrics.PMaxLatency, now))
 	buffer.WriteString(fmt.Sprintf("tpce_latency_sum{%s} %d %d\n", labelString, 0, now))
 	buffer.WriteString(fmt.Sprintf("tpce_latency_count{%s} %s %d\n", labelString, countOfLatencies, now))
 	buffer.WriteString("# EOF")