Cloudbuild details inaccessible to external users

[daviddrysdale]

Anyone external who submits a PR can see the yes/no result of a Cloudbuild run, but cannot see the details of the build. This means that if there are (say) lint failures, the PR author will not be able to fix themselves.

Cloudbuild error page:

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You do not have sufficient permissions to view this page There was an error while loading /cloud-build/builds/abf9850e-197a-493e-b4dc-c1137eb7cafd?project=691249393555.

You are missing at least one of the following required permissions:

Project cloudbuild.builds.get

Check that the project ID is valid and that you have permissions to access it.