add script to create Win VM

tools/gce/create_win2019_container_vm.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+# Copyright 2017 gRPC 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.
+
+# Creates a worker for debugging/experiments.
+# The worker will have all the prerequisites that are installed on kokoro
+# windows workers.
+
+set -ex
+
+cd "$(dirname "$0")"
+
+CLOUD_PROJECT=grpc-testing
+ZONE=us-central1-b
+
+if [ "$1" != "" ]
+then
+  INSTANCE_NAME="$1"
+else
+  INSTANCE_NAME="${USER}-win2019-for-containers-test1"
+fi
+
+MACHINE_TYPE=e2-standard-8
+
+# The image version might need updating.
+gcloud compute instances create "$INSTANCE_NAME" \
+    --project="$CLOUD_PROJECT" \
+    --zone "$ZONE" \
+    --machine-type "$MACHINE_TYPE" \
+    --boot-disk-size=400GB \
+    --boot-disk-type pd-ssd \
+    --image-project=windows-cloud \
+    --image-family=windows-2019-for-containers
+
+# or use --image-family=windows-2019-core-for-containers