Add copyright and license comments to run_zonal_tests.sh

Add copyright notice and licensing information to the script.

Author: chandra-siri

storage/cloudbuild/run_zonal_tests.sh

@@ -1,4 +1,20 @@
 #!/bin/bash
+
+# Copyright 2026 Google 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.
+
+
 set -euxo pipefail
 echo '--- Installing git and cloning repository on VM ---'
 sudo apt-get update && sudo apt-get install -y git python3-pip python3-venv