Merge branch 'winh-group_admin_settings.html.haml-ee' into 'master'

Copy _group_admin_settings.html.haml from CE

Closes #10505

See merge request gitlab-org/gitlab-ee!12224

app/views/groups/_group_admin_settings.html.haml

@@ -25,5 +25,6 @@
           = link_to icon('question-circle'), help_page_path('security/two_factor_authentication', anchor: 'enforcing-2fa-for-all-users-in-a-group')
 .form-group.row
   .offset-sm-2.col-sm-10
-    = f.text_field :two_factor_grace_period, class: 'form-control'
-    .form-text.text-muted Amount of time (in hours) that users are allowed to skip forced configuration of two-factor authentication
+    .form-check
+      = f.text_field :two_factor_grace_period, class: 'form-control'
+      .form-text.text-muted Amount of time (in hours) that users are allowed to skip forced configuration of two-factor authentication