Fix accessing the project repository path in check task

Fixes #2496

lib/tasks/gitlab/check.rake

@@ -759,7 +759,7 @@ namespace :gitlab do
         print "#{project.name_with_namespace.yellow} ... "
 
         correct_options = options.map do |name, value|
-          run("git --git-dir=\"#{project.path_to_repo}\" config --get #{name}").try(:chomp) == value
+          run("git --git-dir=\"#{project.repository.path_to_repo}\" config --get #{name}").try(:chomp) == value
         end
 
         if correct_options.all?
@@ -798,7 +798,7 @@ namespace :gitlab do
 
       Project.find_each(batch_size: 100) do |project|
         print "#{project.name_with_namespace.yellow} ... "
-        project_hook_file = File.join(project.path_to_repo, "hooks", hook_file)
+        project_hook_file = File.join(project.repository.path_to_repo, "hooks", hook_file)
 
         unless File.exists?(project_hook_file)
           puts "missing".red