OCE-37: Build a map from two different OCE Datasets

[mattixtech]

• XML schema changes needed to map events/alarms/situations/inventory

Example output:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<dataSetMap xmlns="http://xmlns.opennms.org/xsd/oce/model/v1.0.0" dataSetA="/test/from/cpn" dataSetB="/test/from/onms">
    <eventMap>
        <aToBMapping aId="aId" bId="bId"/>
    </eventMap>
    <alarmMap>
        <aToBMapping aId="aId" bId="bId"/>
    </alarmMap>
    <situationMap>
        <aToBMapping aId="aId" bId="bId"/>
    </situationMap>
    <inventoryMap>
        <aToBInventoryMapping aType="DEVICE" aId="aId" bType="DEVICE" bId="bId"/>
    </inventoryMap>
</dataSetMap