Add license notices to new and modified files.

Author: matthewdale

internal/randutil/randutil.go

@@ -1,3 +1,9 @@
+// Copyright (C) MongoDB, Inc. 2022-present.
+//
+// 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
+
 // Package randutil provides common random number utilities.
 package randutil
 

internal/randutil/randutil_test.go

@@ -1,3 +1,9 @@
+// Copyright (C) MongoDB, Inc. 2022-present.
+//
+// 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
+
 package randutil
 
 import (

x/mongo/driver/uuid/uuid_test.go

@@ -1,3 +1,9 @@
+// Copyright (C) MongoDB, Inc. 2022-present.
+//
+// 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
+
 package uuid
 
 import (