Update Copyright year for some CI scripts. (#3253)

.ci/buildkite/test_ngtf_build.py

 #!/usr/bin/env python3
 # ==============================================================================
-#  Copyright 2019 Intel Corporation
+#  Copyright 2017-2019 Intel Corporation
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.

.ci/onnx/jenkins/prepare_environment.sh

 #!/bin/bash
 # INTEL CONFIDENTIAL
-# Copyright 2018-2019 Intel Corporation All Rights Reserved.
+# Copyright 2017-2019 Intel Corporation All Rights Reserved.
 # The source code contained or described herein and all documents related to the
 # source code ("Material") are owned by Intel Corporation or its suppliers or
 # licensors. Title to the Material remains with Intel Corporation or its

.ci/onnx/jenkins/runCI.sh

 #!/bin/bash
 
 # ******************************************************************************
-# Copyright 2018-2019 Intel Corporation
+# Copyright 2017-2019 Intel Corporation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

.ci/onnx/jenkins/utils/docker.sh

 #!/bin/bash
 # INTEL CONFIDENTIAL
-# Copyright 2018-2019 Intel Corporation All Rights Reserved.
+# Copyright 2017-2019 Intel Corporation All Rights Reserved.
 # The source code contained or described herein and all documents related to the
 # source code ("Material") are owned by Intel Corporation or its suppliers or
 # licensors. Title to the Material remains with Intel Corporation or its

.ci/onnx/onnxruntime/Jenkinsfile

 // ******************************************************************************
-// Copyright 2018-2019 Intel Corporation
+// Copyright 2017-2019 Intel Corporation
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.