The following downloads offer shasum verification:

• Node - https://github.com/nodejs/node#verifying-binaries
• gcloud - https://cloud.google.com/sdk/docs/install#other_installation_options
• kubectl - https://kubernetes.io/docs/tasks/tools/install-kubectl-linux/#install-kubectl-binary-with-curl-on-linux
• mongodb downloads from full.json

We should be performing shasum checks for these binaries.