What you expected to happen?

smoke-tests to pass on CircleCI.

What happened?

Error installing provider "google": openpgp: signature made by unknown entity.
due to using Terraform 0.11.14 in https://github.com/weaveworks/weave/blob/master/bin/provision_test_vms.sh#L13.
Versions need to by synced across build-tools, where Terraform was bumped to 0.12.0:
weaveworks/build-tools#176

A workaround might be to pin the provider version, e.g. version = ">=2.0, <3.0", but the cross-repo dependencies make this more complicated.

How to reproduce it?

Cause the CircleCI smoke-tests to run.

Anything else we need to know?

No.