Merge branch 'forking_on_gitlab_ci' into 'master'

Fix GitLab CI forking

I created MR here because gitlab.com is unreachable.

See merge request !1884

app/models/project_services/gitlab_ci_service.rb

@@ -76,6 +76,7 @@ class GitlabCiService < CiService
     params = {
       id:                  new_project.id,
       name_with_namespace: new_project.name_with_namespace,
+      path_with_namespace: new_project.path_with_namespace,
       web_url:             new_project.web_url,
       default_branch:      new_project.default_branch,
       ssh_url_to_repo:     new_project.ssh_url_to_repo