Fixing issues as per the comments

components/device-mgt/org.wso2.carbon.device.mgt.extensions/src/test/java/org/wso2/carbon/device/mgt/extensions/device/type/template/DeviceTypeManagerServiceTest.java

@@ -23,6 +23,7 @@ import org.mockito.Mockito;
 import org.testng.Assert;
 import org.testng.annotations.BeforeTest;
 import org.testng.annotations.Test;
+import org.wso2.carbon.base.MultitenantConstants;
 import org.wso2.carbon.device.mgt.common.DeviceManagementException;
 import org.wso2.carbon.device.mgt.common.DeviceStatusTaskPluginConfig;
 import org.wso2.carbon.device.mgt.common.InitialOperationConfig;
@@ -158,13 +159,15 @@ public class DeviceTypeManagerServiceTest {
         boolean isRasberryPiSharedWithTenants =
                 (rasberrypiDeviceConfiguration.getProvisioningConfig() != null) && rasberrypiDeviceConfiguration
                         .getProvisioningConfig().isSharedWithAllTenants();
-        setProvisioningConfig.invoke(androidDeviceTypeManagerService, "carbon.super", androidDeviceConfiguration);
+        setProvisioningConfig.invoke(androidDeviceTypeManagerService, MultitenantConstants.SUPER_TENANT_DOMAIN_NAME,
+                androidDeviceConfiguration);
         ProvisioningConfig provisioningConfig = androidDeviceTypeManagerService.getProvisioningConfig();
         Assert.assertEquals(provisioningConfig.isSharedWithAllTenants(),
                 androidDeviceConfiguration.getProvisioningConfig().isSharedWithAllTenants(),
                 "Provisioning configs " + "are not correctly set as per the configuration file provided");
 
-        setProvisioningConfig.invoke(rasberrypiDeviceTypeManagerService, "carbon.super", rasberrypiDeviceConfiguration);
+        setProvisioningConfig.invoke(rasberrypiDeviceTypeManagerService, MultitenantConstants.SUPER_TENANT_DOMAIN_NAME,
+                rasberrypiDeviceConfiguration);
         provisioningConfig = rasberrypiDeviceTypeManagerService.getProvisioningConfig();
         Assert.assertEquals(provisioningConfig.isSharedWithAllTenants(), isRasberryPiSharedWithTenants,
                 "Provisioning configs are not correctly set as per the configuration file provided.");

components/device-mgt/org.wso2.carbon.device.mgt.extensions/src/test/java/org/wso2/carbon/device/mgt/extensions/utils/Utils.java

@@ -1,3 +1,22 @@
+/*
+ *   Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
+ *
+ *   WSO2 Inc. 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.
+ *
+ */
+
 package org.wso2.carbon.device.mgt.extensions.utils;
 
 import org.w3c.dom.Document;
@@ -16,6 +35,9 @@ import javax.xml.parsers.ParserConfigurationException;
 import java.io.File;
 import java.io.IOException;
 
+/**
+ * This class handles the test utility tasks.
+ */
 public class Utils {
 
     /**