[CDCSDK][#11679] Add missing license headers to Java files

Summary:
The following files have missing license headers:
1. `CreateCDCStreamRequest.java`
2. `GetCheckpointRequest.java`
3. `GetCheckpointResponse.java`
4. `GetDBStreamInfoRequest.java`
5. `GetDBStreamInfoResponse.java`
6. `SetCheckpointRequest.java`
7. `SetCheckpointResponse.java`

This diff adds these missing headers.

Test Plan: Jenkins: skip

Reviewers: skumar, sdash, iamoncar, zyu

Reviewed By: zyu

Subscribers: ybase

Differential Revision: https://phabricator.dev.yugabyte.com/D15860

Author: vaibhav-yb

java/yb-client/src/main/java/org/yb/client/CreateCDCStreamRequest.java

@@ -1,3 +1,16 @@
+// Copyright (c) YugaByte, Inc.
+//
+// Licensed 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.yb.client;
 
 import com.google.protobuf.Message;

java/yb-client/src/main/java/org/yb/client/GetCheckpointRequest.java

@@ -1,3 +1,16 @@
+// Copyright (c) YugaByte, Inc.
+//
+// Licensed 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.yb.client;
 
 import com.google.protobuf.ByteString;

java/yb-client/src/main/java/org/yb/client/GetCheckpointResponse.java

@@ -1,3 +1,16 @@
+// Copyright (c) YugaByte, Inc.
+//
+// Licensed 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.yb.client;
 
 public class GetCheckpointResponse extends YRpcResponse {

java/yb-client/src/main/java/org/yb/client/GetDBStreamInfoRequest.java

@@ -1,3 +1,16 @@
+// Copyright (c) YugaByte, Inc.
+//
+// Licensed 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.yb.client;
 
 import com.google.protobuf.ByteString;

java/yb-client/src/main/java/org/yb/client/GetDBStreamInfoResponse.java

@@ -1,3 +1,16 @@
+// Copyright (c) YugaByte, Inc.
+//
+// Licensed 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.yb.client;
 
 import org.yb.master.MasterReplicationOuterClass;

java/yb-client/src/main/java/org/yb/client/SetCheckpointRequest.java

@@ -1,3 +1,16 @@
+// Copyright (c) YugaByte, Inc.
+//
+// Licensed 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.yb.client;
 
 import com.google.protobuf.ByteString;

java/yb-client/src/main/java/org/yb/client/SetCheckpointResponse.java

@@ -1,3 +1,16 @@
+// Copyright (c) YugaByte, Inc.
+//
+// Licensed 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.yb.client;
 
 public class SetCheckpointResponse extends YRpcResponse {