Test Import/Export
<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=23167) </details> <!--IssueSummary end--> We should move https://gitlab.com/gitlab-org/gitlab-ce/blob/master/spec/features/projects/import_export/import_file_spec.rb and https://gitlab.com/gitlab-org/gitlab-ce/blob/master/spec/features/projects/import_export/export_file_spec.rb to `gitlab-qa` as both are integration tests of significant size that can cause problems such as https://gitlab.com/gitlab-org/gitlab-ce/issues/48836
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