add license header

Signed-off-by: Dmitry S <dsavints@gmail.com>

test/helpers_test.go

@@ -1,3 +1,18 @@
+//
+// Copyright 2024 The Sigstore Authors.
+//
+// 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.
+
 //go:build e2e
 
 package test
@@ -26,7 +41,7 @@ func TestGenerateCertificateBundleFiles(t *testing.T) {
 	} {
 		t.Run(tt.name, func(t *testing.T) {
 			td := t.TempDir()
-			suffix := "foobar"
+			suffix := "foo"
 			caCertFile, caPrivKeyFile, caIntermediateCertFile, caIntermediatePrivKeyFile,
 				certFile, certChainFile, err := generateCertificateBundleFiles(td, true, suffix)
 			if err != nil {