transfermanager: restore correct limit property on CopyManager

Should be internal, not external.

Target: master
Require-book: no
Require-notes: no
Acked-by: Tigran

modules/dcache/src/main/resources/diskCacheV111/doors/copy-manager.xml

@@ -41,6 +41,6 @@
     <property name="pnfsHandler" ref="pnfshandler"/>
     <property name="moverTimeout" value="${transfermanagers.limits.transfer-time}"/>
     <property name="moverTimeoutUnit" value="${transfermanagers.limits.transfer-time.unit}"/>
-    <property name="maxTransfers" value="${transfermanagers.limits.external-transfers}"/>
+    <property name="maxTransfers" value="${transfermanagers.limits.internal-transfers}"/>
   </bean>
 </beans>