CloudBuild triggers new features

[bruno-morel]

CloudBuild does now allow for manually triggered and pub/sub events triggered build.

It is not yet implemented in the Terraform provider, but I do believe it would be fantastic to have it included in pulumi as soon as it is part of the provider...
Those are the TF providers issues to track:

• manual trigger -> Support for manually invoked builds to google_cloudbuild_trigger hashicorp/terraform-provider-google#8374
• pub/sub events -> Support for pub/sub invoked builds to google_cloudbuild_trigger hashicorp/terraform-provider-google#8692

Web hooks triggers should follow soonish, I would expect.

Affected feature

Cloudbuild Triggers