Expose namespace statistics to the owner
Problem to solve
Our API allows fetching project statistics with reporter privilege but we provide aggregated group statistics only to instance admin.
Now that we are working on storage counters at group level gitlab-ce#59232 it will make sense to expose those values also with our API to namespace owners.
Intended users
Namespace owner: Developer or a Group owner
Further details
Proposal
Implements statistics parameter also for GET /groups/:id and for GET /users/:id
Permissions and Security
- In order to access group statistics the user must be an owner
- An user can only access its own user namespace statistics