Change XID type to type defined in ETSI

<?xml version="1.0" encoding="utf-8"?>

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"

           xmlns:etsi221="http://uri.etsi.org/03280/common/2017/07"

           xmlns="urn:3GPP:ns:li:3GPPStateTransfer:r16:v1"

           targetNamespace="urn:3GPP:ns:li:3GPPStateTransfer:r16:v1"

           elementFormDefault="qualified">

  <xs:import namespace="http://uri.etsi.org/03280/common/2017/07" />

  <xs:element name="TFLIState" type="TFLIState"></xs:element>

  <xs:complexType name="TFLIState">

    <xs:sequence>

      <xs:element name="PDUSessionID" type="PDUSessionID"></xs:element>

    <xs:element name="XID" type="UUID"></xs:element>

      <xs:element name="XID" type="etsi:XID"></xs:element>

      <xs:element name="CorrelationID" type="xs:hexBinary"></xs:element>

      <xs:element name="TriggeredTasks" type="TriggeredTask" minOccurs="1" maxOccurs="unbounded"></xs:element>

    </xs:sequence>

  <xs:complexType name="TriggeredTask">

    <xs:sequence>

    <xs:element name="XID" type="UUID"></xs:element>

      <xs:element name="XID" type="etsi:XID"></xs:element>

      <xs:element name="NEID" type="xs:token"></xs:element>

    </xs:sequence>

  </xs:complexType>

<xs:complexType name="UUID">

  <xs:restriction base="xs:string">

    <xs:pattern value="[0-1]{128}"/>

  </xs:restriction>

</xs:complexType>

  <xs:simpleType name="PDUSessionID">

    <xs:restriction base="xs:unsignedInt">

      <xs:minInclusive value="0"/>