fix repo hooks missing on import (!5549) · Merge requests · GitLab.org / GitLab FOSS · GitLab

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/19556

Repo hooks are missing from imported projects

CHANGELOG entry added
Tests
- Added for this feature/bug
- All builds are passing
Conform by the style guides
Branch has no merge conflicts with master (if you do - rebase it please)
Squashed related commits together