Needs approval from an approver in each of these files:
- ~~[OWNERS](https://github.com/knative/build-templates/blob/master/OWNERS)~~ [ImJasonH]
Approvers can indicate their approval by writing `/approve` in a comment
Approvers can cancel approval by writing `/approve cancel` in a comment
Corresponds to https://github.com/knative/build/pull/655
After this PR merges, I'll archive the repo.