`PATCH /repos/{owner}/{repo}` API allows users to update `allow_rebase_update`, `default_delete_branch_after_merge`, but `GET /repos/{owner}/{repo}` API does not return these two options, and API users has no other ways to find the state of these two options.
This PR add `allow_rebase_update`, `default_delete_branch_after_merge` to repository query api response.