fix wrong negative duration time

Signed-off-by: Markus Blaschke <[email protected]>

Author: mblaschke

probe_loganalytics_query.go

@@ -147,7 +147,7 @@ func probeLogAnalyticsQueryHandler(w http.ResponseWriter, r *http.Request) {
 		"subscriptionID": "",
 		"handler":        ProbeLoganalyticsScrapeUrl,
 		"filter":         query,
-	}).Observe(time.Until(startTime).Seconds())
+	}).Observe(time.Since(startTime).Seconds())
 
 	h := promhttp.HandlerFor(registry, promhttp.HandlerOpts{})
 	h.ServeHTTP(w, r)

probe_metrics_list.go

@@ -115,7 +115,7 @@ func probeMetricsListHandler(w http.ResponseWriter, r *http.Request) {
 					"subscriptionID": subscription,
 					"handler":        ProbeMetricsListUrl,
 					"filter":         settings.Filter,
-				}).Observe(time.Until(startTime).Seconds())
+				}).Observe(time.Since(startTime).Seconds())
 
 			}(subscription)
 		}