Add notes about LFS/Annex object not being synced

app/views/projects/mirrors/_instructions.html.haml

@@ -6,3 +6,5 @@
       If your HTTP repository is not publicly accessible, add authentication information to the URL: <code>https://username:password@gitlab.company.com/group/project.git</code>.
     %li
       The update action will time out after 10 minutes. For big repositories, use a clone/push combination.
+    %li
+      The Git LFS/Annex objects will <strong>not</strong> be synced.

app/views/shared/_import_form.html.haml

@@ -14,6 +14,8 @@
           The import will time out after 15 minutes. For repositories that take longer, use a clone/push combination.
         %li
           To migrate an SVN repository, check out #{link_to "this document", "http://doc.gitlab.com/ce/workflow/importing/migrating_from_svn.html"}.
+        %li
+          The Git LFS/Annex objects will <strong>not</strong> be imported.
 
 .form-group
   .col-sm-offset-2.col-sm-10
@@ -23,6 +25,7 @@
         %strong
           Mirror repository
       .help-block
-        Automatically update this project's branches and tags from the upstream repository every hour.
+        Automatically update this project's branches and tags from the upstream
+        repository every hour. The Git LFS/Annex objects will not be synced.
 
 = f.hidden_field :mirror_user_id, value: current_user.id