Add missing boilerplate

releasing/cloudbuild-local.sh

@@ -1,4 +1,7 @@
 #!/bin/bash
+# Copyright 2022 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
 #
 # To test the release process, this script attempts
 # to use a Google cloudbuild configuration to create

releasing/cloudbuild.sh

@@ -1,4 +1,7 @@
 #!/bin/bash
+# Copyright 2022 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
 #
 # This script is called by Kustomize's Cloud Build release pipeline.
 # It installs jq (required for release note construction)

releasing/compile-changelog.sh

@@ -1,4 +1,7 @@
 #!/bin/bash
+# Copyright 2022 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
 #
 # Builds a PR-oriented changelog from the git history for the given module.
 #

releasing/helpers.sh

@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+# Copyright 2022 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
 
 function createBranch {
   branch=$1

releasing/run-goreleaser.sh

@@ -1,4 +1,7 @@
 #!/bin/bash
+# Copyright 2022 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
 #
 # Builds and optionally releases the specified module
 #