Fix for MOB-1029: Read operations for zones should not create zones

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@14859 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/service/cmr/security/AuthorityService.java

@@ -322,6 +322,16 @@ public interface AuthorityService
     @Auditable(parameters = {"zoneName"})
     public NodeRef getOrCreateZone(String zoneName);
     
+    /**
+     * Gets  an authority zone node with the specified name
+     * 
+     * @param zoneName
+     *            the zone name
+     * @return reference to the zone node or null
+     */
+    @Auditable(parameters = {"zoneName"})
+    public NodeRef getZone(String zoneName);
+    
     /**
      * Gets the name of the zone containing the specified authority.
      *