Make Nginx client_max_body_size configurable

files/gitlab-cookbooks/gitlab/templates/default/nginx-gitlab-http.conf.erb

@@ -27,7 +27,7 @@ server {
   
   # Increase this if you want to upload large attachments
   # Or if you want to accept large git objects over http
-  client_max_body_size 5m;
+  client_max_body_size <%= @client_max_body_size %>;
   # individual nginx logs for this gitlab vhost
   access_log  <%= @log_directory %>/gitlab_access.log;