Add reconciliation keys for SLT in order to allow import for SLT having the same name

git-svn-id: http://svn.code.sf.net/p/itop/code/trunk@2637 a333f486-631f-4898-b8df-5754b55c2be0

datamodels/2.x/itop-service-mgmt/datamodel.itop-service-mgmt.xml

@@ -1555,6 +1555,9 @@
         <reconciliation>
           <attributes>
             <attribute id="name"/>
+            <attribute id="priority"/>
+            <attribute id="request_type"/>
+            <attribute id="metric"/>
           </attributes>
         </reconciliation>
       </properties>