Adds automatic PreSignedUrl generation to RDS.createDBCluser and RDS.copyDBClusterSnapshot

Author: chrisradek

lib/services/rds.js

@@ -3,7 +3,7 @@ var AWS = require('../core');
  /**
   * @api private
   */
- var crossRegionOperations = ['copyDBSnapshot', 'createDBInstanceReadReplica'];
+ var crossRegionOperations = ['copyDBSnapshot', 'createDBInstanceReadReplica', 'createDBCluster', 'copyDBClusterSnapshot'];
 
  AWS.util.update(AWS.RDS.prototype, {
    /**