WIP: Implement endpoint to proxy HTTP request to services running in builds
What does this MR do?
This is a follow-up MR for https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/9723.
In this MR we add the necessary endpoint to proxy regular HTTP requests.
Does this MR meet the acceptance criteria?
- Changelog entry
- Documentation created/updated or follow-up review issue created
- Code review guidelines
- Merge request performance guidelines
- Style guides
- Separation of EE specific content
If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:
Label as security and @ mention
- The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
- Security reports checked/validated by a reviewer from the AppSec team