Merge pull request #13251 from jtattermusch/unsimplify_win_debug_worker

Windows debug worker needs drive T:

tools/gce/create_windows_debug_worker.sh

@@ -32,6 +32,17 @@ else
 fi
 
 MACHINE_TYPE=n1-standard-8
+TMP_DISK_NAME="$INSTANCE_NAME-temp-disk"
+
+gcloud compute disks create $TMP_DISK_NAME \
+    --project="$CLOUD_PROJECT" \
+    --zone "$ZONE" \
+    --image-project google.com:kokoro \
+    --image empty-100g-image \
+    --type pd-ssd
+
+echo 'Created scratch disk, waiting for it to become available.'
+sleep 15
 
 gcloud compute instances create $INSTANCE_NAME \
     --project="$CLOUD_PROJECT" \
@@ -41,4 +52,5 @@ gcloud compute instances create $INSTANCE_NAME \
     --image kokoro-win7build-v9-prod-debug \
     --boot-disk-size 500 \
     --boot-disk-type pd-ssd \
-    --tags=allow-ssh
+    --tags=allow-ssh \
+    --disk auto-delete=yes,boot=no,name=$TMP_DISK_NAME