GCF CI/CD: Use consistent region tags across languages (#1713)
GCF CI/CD: Use consistent region tags across languages (#1713)

@labtopia FYI - this will require an update to the docs

(**Motivation:** we're adding [Java](https://github.com/GoogleCloudPlatform/java-docs-samples/pull/2615) and [Python](https://github.com/GoogleCloudPlatform/python-docs-samples/pull/3324) versions of this sample.)
GoogleCloudPlatform/nodejs-docs-samples,GoogleCloudPlatform/nodejs-docs-samples,GoogleCloudPlatform/nodejs-docs-samples,GoogleCloudPlatform/nodejs-docs-samples