Switch to preferred test.properties

src/it/projects/effective-site/invoker.properties

@@ -15,5 +15,4 @@
 # specific language governing permissions and limitations
 # under the License.
 
-invoker.goals = clean site:effective-site
-invoker.mavenOpts = -Doutput=effective-site.xml
+invoker.goals = clean site:effective-site

src/it/projects/effective-site/test.properties

@@ -0,0 +1,18 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+# 
+#   http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+output=effective-site.xml