Enable LFS setting UI for Masters and Owners

LFS can be enabled and disabled per project using the API by Masters
and Owners, but the UI is only available to Admins. The interface and
API should be consistent.

LFS can also be enabled and disabled per group using the API by Owners,
but the UI is only available to Admins. This interface should also be
consistent.

Additionally removes an unneeded check if 2FA interface, since the
interface is only available to Owners.

Closes #33320

app/helpers/projects_helper.rb

@@ -442,7 +442,7 @@ module ProjectsHelper
       visibilityHelpPath: help_page_path('public_access/public_access'),
       registryAvailable: Gitlab.config.registry.enabled,
       registryHelpPath: help_page_path('user/project/container_registry'),
-      lfsAvailable: Gitlab.config.lfs.enabled && current_user.admin?,
+      lfsAvailable: Gitlab.config.lfs.enabled,
       lfsHelpPath: help_page_path('workflow/lfs/manage_large_binaries_with_git_lfs')
     }
 

app/views/groups/_group_admin_settings.html.haml

-- if current_user.admin?
-  .form-group
+.form-group
   = f.label :lfs_enabled, 'Large File Storage', class: 'control-label'
   .col-sm-10
     .checkbox
@@ -11,8 +10,7 @@
         %br/
         %span.descr This setting can be overridden in each project.
 
-- if can? current_user, :admin_group, @group
-  .form-group
+.form-group
   = f.label :require_two_factor_authentication, 'Two-factor authentication', class: 'control-label col-sm-2'
   .col-sm-10
     .checkbox
@@ -21,7 +19,7 @@
         %strong
           Require all users in this group to setup Two-factor authentication
           = link_to icon('question-circle'), help_page_path('security/two_factor_authentication', anchor: 'enforcing-2fa-for-all-users-in-a-group')
-  .form-group
+.form-group
   .col-sm-offset-2.col-sm-10
     .checkbox
       = f.text_field :two_factor_grace_period, class: 'form-control'

changelogs/unreleased/jr-33320-lfs-settings-interface.yml

+---
+title: Show group and project LFS settings in the interface to Owners and Masters
+merge_request: 18562
+author:
+type: changed

doc/workflow/lfs/manage_large_binaries_with_git_lfs.md

@@ -251,13 +251,4 @@ It is possible to host LFS objects externally by setting a custom LFS url with `
 
 Because GitLab verifies the existence of objects referenced by LFS pointers, push will fail when LFS is enabled for the project.
 
-LFS can be disabled for a project by Owners and Masters using the [Project API](../../api/projects.md#edit-project).
-
-```bash
-curl --request PUT \
-  --url https://example.com/api/v4/projects/<PROJECT_ID> \
-  --header 'Private-Token: <YOUR_PRIVATE_TOKEN>' \
-  --data 'lfs_enabled=false'
-```
-
-Note, `<PROJECT_ID>` can also be substituted with a [namespaced path](../../api/README.md#namespaced-path-encoding).
+LFS can be disabled from the [Project settings](../../user/project/settings/index.md).

spec/features/projects/settings/lfs_settings_spec.rb

 require 'rails_helper'
 
 describe 'Projects > Settings > LFS settings' do
-  let(:admin) { create(:admin) }
   let(:project) { create(:project) }
+  let(:user) { create(:user) }
+  let(:role) { :master }
 
   context 'LFS enabled setting' do
     before do
       allow(Gitlab.config.lfs).to receive(:enabled).and_return(true)
 
-      sign_in(admin)
+      sign_in(user)
+      project.add_role(user, role)
     end
 
+    context 'for master' do
+      let(:role) { :master }
+
       it 'displays the correct elements', :js do
         visit edit_project_path(project)
 
@@ -18,4 +23,5 @@ describe 'Projects > Settings > LFS settings' do
         expect(page).to have_selector('input[name="project[lfs_enabled]"] + button', visible: true)
       end
     end
+  end
 end