make repomirror a little easier to use

schema/lib/types/repomirror.xsd

@@ -3,6 +3,10 @@
            elementFormDefault="qualified"
            attributeFormDefault="unqualified">
 
+  <xs:simpleType name="t_repomir_returnCodeList">
+    <xs:list itemType="xs:integer"/>
+  </xs:simpleType>
+
   <xs:simpleType name="t_repomir_synctype">
     <xs:restriction base="xs:token">
       <xs:enumeration value="rsync"/>