Add LICENCE header to createCerts.sh

Also remove comments that are not useful anymore.

pkg/cloudprovider/providers/vsphere/vclib/fixtures/createCerts.sh

@@ -1,11 +1,20 @@
 #!/usr/bin/env bash
 
-set -eu
+# Copyright 2018 The Kubernetes 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.
 
-# 1. create CA key
-# 2. create CA cert
-# 3. create CSR with IP SAN
-# 4. create server cert with IP SAN
+set -eu
 
 createKey() {
   openssl genrsa -out "$1" 4096