Button up automatic LSIF indexing

Created by: efritz

Ensure the following repos in the sourcegraph-codeintel-showcase organization are succeeding to upload LSIF indexes to dotcom in CI, and ensure that the commits and configuration look similar.

• prometheus
• TypeScript
• aws-sdk-go
• hugo
• express
• react
• grafana
• helm
• jest
• moby
• kibana
• IxJS
• kubernetes
• etcd
• go
• lodash
• moment
• got
• angular
• rxjs