Add service ping qa selectors

app/views/admin/application_settings/_usage.html.haml

@@ -15,7 +15,7 @@
     .form-group
       - can_be_configured = @application_setting.usage_ping_can_be_configured?
       .form-check
-        = f.check_box :usage_ping_enabled, disabled: !can_be_configured, class: 'form-check-input'
+        = f.check_box :usage_ping_enabled, disabled: !can_be_configured, class: 'form-check-input', data: { qa_selector: 'enable_usage_data_checkbox' }
         = f.label :usage_ping_enabled, class: 'form-check-label' do
           = _('Enable Service Ping')
         .form-text.text-muted

app/views/admin/application_settings/metrics_and_profiling.html.haml

@@ -42,7 +42,7 @@
 
 .js-self-monitoring-settings{ data: self_monitoring_project_data }
 
-%section.settings.as-usage.no-animate#js-usage-settings{ class: ('expanded' if expanded_by_default?) }
+%section.settings.as-usage.no-animate#js-usage-settings{ class: ('expanded' if expanded_by_default?), data: { qa_selector: 'usage_statistics_settings_content' } }
   .settings-header#usage-statistics
     %h4
       = _('Usage statistics')