Show related merge requests in pipeline view

app/views/projects/pipelines/_info.html.haml

@@ -59,3 +59,9 @@
     %span.js-details-content.hide
       = link_to @pipeline.sha, project_commit_path(@project, @pipeline.sha), class: "commit-sha commit-hash-full"
     = clipboard_button(text: @pipeline.sha, title: _("Copy commit SHA"))
+
+  .well-segment.related-merge-request-info
+    .icon-container
+      = sprite_icon("git-merge")
+    %span.related-merge-requests
+      = @pipeline.all_related_merge_request_text

changelogs/unreleased/mfluharty-add-mr-links-to-pipeline-view.yml

+---
+title: Show related merge requests in pipeline view
+merge_request: 18697
+author:
+type: added

spec/features/projects/pipelines/pipeline_spec.rb

@@ -98,6 +98,16 @@ describe 'Pipeline', :js do
       end
     end
 
+    it 'shows links to the related merge requests' do
+      visit_pipeline
+
+      within '.related-merge-request-info' do
+        pipeline.all_merge_requests.map do |merge_request|
+          expect(page).to have_link(project_merge_request_path(project, merge_request))
+        end
+      end
+    end
+
     it_behaves_like 'showing user status' do
       let(:user_with_status) { pipeline.user }