[apache#4040] Update Rat check to ignore Datastrato headers (apache#4044

)

### What changes were proposed in this pull request?

No longer accept Datastrato headers.

### Why are the changes needed?

See above.

Fix: apache#4040 

### Does this PR introduce _any_ user-facing change?

No.

### How was this patch tested?

Note that until all file headers have changed the Rat test will not
pass. I made it a separate PR for easy review.

build.gradle.kts

@@ -1,6 +1,20 @@
 /*
- * Copyright 2023 Datastrato Pvt Ltd.
- * This software is licensed under the Apache License version 2.
+ * 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.
  */
 import com.github.gradle.node.NodeExtension
 import com.github.gradle.node.NodePlugin
@@ -440,9 +454,6 @@ subprojects {
 }
 
 tasks.rat {
-  substringMatcher("DS", "Datastrato", "Copyright 2023 Datastrato Pvt Ltd.")
-  substringMatcher("DS", "Datastrato", "Copyright 2024 Datastrato Pvt Ltd.")
-  approvedLicense("Datastrato")
   approvedLicense("Apache License Version 2.0")
 
   // Set input directory to that of the root project instead of the CWD. This

clients/client-python/tests/integration/test_catalog.py

@@ -1,6 +1,20 @@
 """
-Copyright 2024 Datastrato Pvt Ltd.
-This software is licensed under the Apache License version 2.
+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.
 """
 
 import logging