adding boilerplate

hack/conformance_tests.sh

@@ -1,4 +1,19 @@
 #!/bin/sh
+
+# Copyright 2019 The Kubernetes Authors 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.
+#
 # This script executes the Kubernetes conformance tests in accordance with:
 # https://github.com/cncf/k8s-conformance/blob/master/instructions.md
 #