feat(RPM): add rounding to average response time send

Author: peteyycz

lib/providers/httpTransaction/index.js

@@ -221,7 +221,7 @@ HttpTransaction.prototype._sendRpm = function () {
     var dataBag = {
       requests: cloneDeep(this.rpmMetrics),
       timestamp: new Date().toISOString(),
-      avgResponseTime: this.avgResponseTime
+      avgResponseTime: Math.floor(this.avgResponseTime)
     };
 
     this.eventBus.emit(this.eventBus.RPM_METRICS, dataBag);