add tpz online item xml to testing

testing/tpzonlineitem.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!--Sample XML file generated by XMLSpy v2013 sp1 (http://www.altova.com)-->
+<OnLineArchiveItem xsi:schemaLocation="http://www.telespazio.com/CSCDA/CDD/PDAS PDAS_interfaces%2020190924_1916.xsd" xmlns="http://www.telespazio.com/CSCDA/CDD/PDAS" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+	<identifier>urn:eop:KGS:K3_20160101113014_19339_02281264_L0F_28E2
+</identifier>
+	<path>
+		<Service>OS</Service>
+		<URL>KS03_AIS_PSH_1G_20160101T113020_20160101T113022_KGS_019339_75CE.tar
+</URL>
+	</path>
+	<status>added</status>
+</OnLineArchiveItem>