Add Copyright Headers (#362)

Summary:
Add Copyright Headers as required by Meta OSS policy.

Pull Request resolved: #362

Reviewed By: H-Huang

Differential Revision: D46704232

Pulled By: osalpekar

fbshipit-source-id: 2cc6b0a9a60d3d18054f404eefd5a8d289c06f08

Author: osalpekar

gloo/transport/tcp/tls/dynamic_library.cc

@@ -1,3 +1,9 @@
+// Copyright (c) Meta Platforms, Inc. and its affiliates.
+// All rights reserved.
+//
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree.
+
 #include "dynamic_library.h"
 
 #include <dlfcn.h>

gloo/transport/tcp/tls/openssl.cc

@@ -1,3 +1,9 @@
+// Copyright (c) Meta Platforms, Inc. and its affiliates.
+// All rights reserved.
+//
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree.
+
 #include <openssl/err.h>
 #include <openssl/ssl.h>