Migrate checkbox for performance optimization settings

Changelog: changed

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

-= form_for @application_setting, url: network_admin_application_settings_path(anchor: 'js-performance-settings'), html: { class: 'fieldset-form' } do |f|
+= gitlab_ui_form_for @application_setting, url: network_admin_application_settings_path(anchor: 'js-performance-settings'), html: { class: 'fieldset-form' } do |f|
   = form_errors(@application_setting)
 
   %fieldset
     .form-group
-      .form-check
-        = f.check_box :authorized_keys_enabled, class: 'form-check-input'
-        = f.label :authorized_keys_enabled, class: 'form-check-label' do
-          = _('Use authorized_keys file to authenticate SSH keys')
-        .form-text.text-muted
-          = _('Authenticate user SSH keys without requiring additional configuration. Performance of GitLab can be improved by using the GitLab database instead.')
-          = link_to _('How do I configure authentication using the GitLab database?'), help_page_path('administration/operations/fast_ssh_key_lookup'), target: '_blank', rel: 'noopener noreferrer'
+      - help_link = help_page_path('administration/operations/fast_ssh_key_lookup')
+      - help_link_start = '<a href="%{url}" target="_blank" rel="noopener noreferrer">'.html_safe % { url: help_link }
+      = f.gitlab_ui_checkbox_component :authorized_keys_enabled, _('Use authorized_keys file to authenticate SSH keys'),
+      help_text: _('Authenticate user SSH keys without requiring additional configuration. Performance of GitLab can be improved by using the GitLab database instead. %{link_start}How do I configure authentication using the GitLab database? %{link_end}').html_safe % { link_start: help_link_start, link_end: '</a>'.html_safe}
     .form-group
       = f.label :raw_blob_request_limit, _('Raw blob request rate limit per minute'), class: 'label-bold'
       = f.number_field :raw_blob_request_limit, class: 'form-control gl-form-input'

locale/gitlab.pot

@@ -5224,7 +5224,7 @@ msgstr ""
 msgid "Authenticate"
 msgstr ""
 
-msgid "Authenticate user SSH keys without requiring additional configuration. Performance of GitLab can be improved by using the GitLab database instead."
+msgid "Authenticate user SSH keys without requiring additional configuration. Performance of GitLab can be improved by using the GitLab database instead. %{link_start}How do I configure authentication using the GitLab database? %{link_end}"
 msgstr ""
 
 msgid "Authenticate with GitHub"
@@ -18680,9 +18680,6 @@ msgstr ""
 msgid "How do I configure Akismet?"
 msgstr ""
 
-msgid "How do I configure authentication using the GitLab database?"
-msgstr ""
-
 msgid "How do I configure it?"
 msgstr ""