fix unit tests

Author: elek

hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/conf/OzoneConfiguration.java

@@ -55,7 +55,9 @@ public OzoneConfiguration(Configuration conf) {
     super(conf);
     //load the configuration from the classloader of the original conf.
     setClassLoader(conf.getClassLoader());
-    loadDefaults();
+    if (!(conf instanceof OzoneConfiguration)) {
+      loadDefaults();
+    }
   }
 
   private void loadDefaults() {

hadoop-hdds/config/src/main/java/org/apache/hadoop/hdds/conf/ConfigFileGenerator.java

@@ -36,8 +36,7 @@
 import java.util.Set;
 
 /**
- * Annotation processor to generate ozone-site-generated fragments from
- * @Config annotations.
+ * Annotation processor to generate config fragments from Config annotations.
  */
 @SupportedAnnotationTypes("org.apache.hadoop.hdds.conf.ConfigGroup")
 public class ConfigFileGenerator extends AbstractProcessor {

hadoop-ozone/integration-test/src/test/resources/core-site.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0"?>
+<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
+<!--
+   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.
+-->
+
+<!-- Put site-specific property overrides in this file. -->
+
+<configuration>
+
+</configuration>

hadoop-ozone/integration-test/src/test/resources/hdfs-site.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0"?>
+<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
+<!--
+   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.
+-->
+
+<!-- Put site-specific property overrides in this file. -->
+
+<configuration>
+
+</configuration>