Merge branch '7065-performance-metrics-not-rendered-properly-in-merge-request-widget' into 'master'

Add a generic more CSS class to render expandable reports correctly

See merge request gitlab-org/gitlab-ce!21014

app/assets/javascripts/reports/components/grouped_test_reports_app.vue

@@ -82,7 +82,7 @@
     :loading-text="groupedSummaryText"
     :error-text="groupedSummaryText"
     :has-issues="reports.length > 0"
-    class="mr-widget-border-top grouped-security-reports"
+    class="mr-widget-border-top grouped-security-reports mr-report"
   >
     <div
       slot="body"

app/assets/stylesheets/pages/merge_requests.scss

@@ -87,7 +87,7 @@
     padding: 0;
   }
-  .grouped-security-reports {
+  .mr-report {
     padding: 0;
     > .media {