added copyright

pkg/splunk/client/gcpbucketclient_test.go

@@ -1,7 +1,17 @@
-// gcpbucketclient_test.go
-
-// Copyright (c) 2018-2022 ...
-// [License and other header comments as in your original file]
+// Copyright (c) 2018-2022 Splunk Inc.
+// All rights reserved.
+//
+// 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 client