Add license header to TenantUserLoginTestCase

modules/integration/tests-integration/tests-backend/src/test/java/org/wso2/am/integration/tests/login/TenantUserLoginTestCase.java

@@ -1,3 +1,21 @@
+/*
+ *Copyright (c) 2023, 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.am.integration.tests.login;
 
 import org.testng.annotations.AfterClass;