Merge branch 'fix/ha-mode-import-issue' into 'master'

Fix Import/Export not working in HA mode

Use a shared path instead of `Tempfile` default `/tmp` so the import file is accessible by any GitLab instance.

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/20506

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !5618

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/gitlab/import_export.rb b/lib/gitlab/import_export.rb
index 48b2c43ac21..bb562bdcd2c 100644
--- a/lib/gitlab/import_export.rb
+++ b/lib/gitlab/import_export.rb
@@ -13,6 +13,10 @@ module Gitlab
       File.join(Settings.shared['path'], 'tmp/project_exports')
     end
 
+    def import_upload_path(filename:)
+      File.join(storage_path, 'uploads', filename)
+    end
+
     def project_filename
       "project.json"
     end