Add Custom HTTP Git clone URL root setting to UI

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

@@ -53,6 +53,11 @@
       = select(:application_setting, :enabled_git_access_protocol, [['Both SSH and HTTP(S)', nil], ['Only SSH', 'ssh'], ['Only HTTP(S)', 'http']], {}, class: 'form-control')
       %span.form-text.text-muted#clone-protocol-help
         = _('Allow only the selected protocols to be used for Git access.')
+    .form-group
+      = f.label :custom_http_clone_url_root, _('Custom Git clone URL for HTTP(S)'), class: 'label-bold'
+      = f.text_field :custom_http_clone_url_root, class: 'form-control', placeholder: 'https://git.example.com', :'aria-describedby' => 'custom_http_clone_url_root_help_block'
+      %span.form-text.text-muted#custom_http_clone_url_root_help_block
+        = _('Replaces the clone URL root.')
 
     - ApplicationSetting::SUPPORTED_KEY_TYPES.each do |type|
       - field_name = :"#{type}_key_restriction"

locale/gitlab.pot

@@ -4828,6 +4828,9 @@ msgstr ""
 msgid "Custom CI configuration path"
 msgstr ""
 
+msgid "Custom Git clone URL for HTTP(S)"
+msgstr ""
+
 msgid "Custom hostname (for private commit emails)"
 msgstr ""
 
@@ -13735,6 +13738,9 @@ msgstr ""
 msgid "Replaced all labels with %{label_references} %{label_text}."
 msgstr ""
 
+msgid "Replaces the clone URL root."
+msgstr ""
+
 msgid "Reply by email"
 msgstr ""