message: build_on_vm.sh: Fix gcloud deprecation warning.
  Fixes the following warning:
  ```
  WARNING: Argument NAME is deprecated. Use --filter="name=( 'NAME' ... )" instead.
  ```
diff: @@ -99,7 +99,7 @@ if [ -z "$machine_name" ]; then
  machine_name+="-${sanitized_branch}-mps-build${bit_suffix}"
  fi
  -instances=$(gcloud compute instances list -q "$machine_name")
  +instances=$(gcloud compute instances list --filter="name=( '$machine_name' )")
  if [ -n "$instances" ]; then
  if $delete_existing_machine; then
  gcloud -q compute instances delete "$machine_name"
  