Security and safety improvements for gitlab-workhorse integration
Companion to https://gitlab.com/gitlab-org/gitlab-workhorse/merge_requests/60
- Use a custom content type when sending data to gitlab-workhorse
- Verify (using JWT and a shared secret on disk) that internal API requests came from gitlab-workhorse
This will allow us to build features in gitlab-workhorse that require
more trust, and protect us against programming mistakes in the future.
This is designed so that no action is required for installations from
source. For omnibus-gitlab we need to add code that manages the shared
secret.
See merge request !5907
b7e6da5a4b