adjust sleep time based on app responsiveness

labs/monitoring/apps/traffic-simulator.sh

@@ -4,5 +4,5 @@ while true;
 do
     siege -c20 -r1000 http://frontend-monitoring-apps.apps.ocp4.example.com/ > /dev/null &
     siege -c20 -r20 http://exoplanets-monitor.apps.ocp4.example.com/ > /dev/null &
-    sleep 30
+    sleep 10
 done