KamailioAgent with s as Usage

agents/kamevent.go

@@ -115,6 +115,9 @@ func (kev KamEvent) MissingParameter() bool {
 func (kev KamEvent) AsMapStringInterface() (mp map[string]interface{}) {
 	mp = make(map[string]interface{})
 	for k, v := range kev {
+		if k == utils.Usage {
+			k += "s" // mark the Usage as seconds
+		}
 		if !utils.IsSliceMember(kamReservedFields, k) { // reserved attributes not getting into event
 			mp[k] = v
 		}