test: add owlbot nodejs container tests (#414)

Source-Link: https://github.com/googleapis/synthtool/commit/520c18dcec842f83f719e54828a66992315b3e36
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest@sha256:279480734d569608505a2994924c273cba7e39df52e975dd4b90c2be1e010b71

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>