Allow instance admins to link all projects to DVCS

Use `Project.public_or_visible_to_user` instead of
`current_user.authorized_projects`

doc/integration/jira_development_panel.md

@@ -20,7 +20,7 @@ is one GitLab project to the entire Jira instance.
 
 We recommend that a GitLab group admin
 or instance admin (in the case of self-hosted GitLab) set up the integration,
-in order to simplify administration (subject to [limitations](#limitations)).
+in order to simplify administration.
 
 TIP: **Tip:**
 Create and use a single-purpose "jira" user in GitLab, so that removing
@@ -123,8 +123,6 @@ Click the links to see your GitLab repository data.
 ## Limitations
 
 - This integration is currently not supported on GitLab instances under a [relative url][relative-url] (e.g. `http://example.com/gitlab`).
-- The GitLab user that you use to configure this integration must be a member of all
-    projects you wish to link to Jira. We're investigating removing this limitation in in [a feature proposal](https://gitlab.com/gitlab-org/gitlab-ee/issues/8902).
 
 ## Changelog
 

ee/changelogs/unreleased/8902-jira-dvcs-instance-admin.yml

+---
+title: Allow instance admins to link all projects to Jira DVCS
+merge_request: 10541
+author:
+type: added

ee/lib/api/v3/github.rb

@@ -105,17 +105,19 @@ module API
         params do
           use :pagination
         end
-        # rubocop: disable CodeReuse/ActiveRecord
+
         get ':namespace/repos', requirements: NAMESPACE_ENDPOINT_REQUIREMENTS do
           namespace = Namespace.find_by_full_path(params[:namespace])
           not_found!('Namespace') unless namespace
 
-          projects = current_user.authorized_projects.where(namespace_id: namespace.self_and_descendants).to_a
+          projects = Project.public_or_visible_to_user(current_user)
+                            .in_namespace(namespace.self_and_descendants)
+                            .to_a
           projects.select! { |project| licensed_project?(project) }
           projects = ::Kaminari.paginate_array(projects)
+
           present paginate(projects), with: ::API::Github::Entities::Repository
         end
-        # rubocop: enable CodeReuse/ActiveRecord
       end
 
       # Jira dev panel integration weirdly requests for "/-/jira/pulls" instead

ee/spec/requests/api/v3/github_spec.rb

@@ -242,6 +242,18 @@ describe API::V3::Github do
       expect(json_response.size).to eq(projects.size)
     end
 
+    context 'when instance admin' do
+      let(:project) { create(:project, group: group) }
+
+      before do
+        stub_licensed_features(jira_dev_panel_integration: true)
+      end
+
+      it 'returns an array of projects belonging to group with github format' do
+        expect_project_under_namespace([project], group, create(:user, :admin))
+      end
+    end
+
     context 'group namespace' do
       let(:project) { create(:project, group: group) }