[VOL-5254] - repo:ofagent-go release tag & branch

cmd/*.go
internal/*.go
-------------
  o Update copyright notice ending date.
  o Run gofmt -s -e -w to avoid linting problems.
  o Baseline build to screen for pre-existing repo problems.

Change-Id: Ie52512b47dc88233b0bf9caf9926e0770dee967a
diff --git a/internal/pkg/holder/doc.go b/internal/pkg/holder/doc.go
index 9b60e25..61b5c1b 100644
--- a/internal/pkg/holder/doc.go
+++ b/internal/pkg/holder/doc.go
@@ -1,5 +1,5 @@
 /*
- *   Copyright 2020-2023 Open Networking Foundation (ONF) and the ONF Contributors
+ *   Copyright 2020-2024 Open Networking Foundation (ONF) and the ONF Contributors
  *
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.