gitlab: update SlapOS'ify configuration.

- Fix artifacts path key in gitlab.yml.erb
  https://gitlab.com/gitlab-org/omnibus-gitlab/commit/c29c1a5d

- Do not serve anything via nginx as we have workhorse
  https://gitlab.com/gitlab-org/omnibus-gitlab/commit/ac390aba

software/gitlab/software.cfg

@@ -249,7 +249,7 @@ md5sum  = 14c5632182d830c03f7788c85d6f4da1
 
 [gitlab.yml.in]
 <= download-template
-md5sum  = 8f1c52ed223ee2c2d07c6c79bcd2f6c0
+md5sum  = 7f48727ab64f1a6f3854420fa0434889
 
 [instance-gitlab.cfg.in]
 <= download-file
@@ -261,7 +261,7 @@ md5sum  = a56a44e96f65f5ed20211bb6a54279f4
 
 [nginx-gitlab-http.conf.in]
 <= download-template
-md5sum  = be7ddd26b0b0196fde8d699e50e84b2f
+md5sum  = 405dd5aa5703425a50c01dfe62f3a28b
 
 [nginx.conf.in]
 <= download-template

software/gitlab/template/gitlab.yml.in

@@ -124,7 +124,7 @@ production: &base
   artifacts:
     enabled: <%= @artifacts_enabled %>
     # The location where Build Artifacts are stored (default: shared/artifacts).
-    storage_path: <%= @artifacts_path %>
+    path: <%= @artifacts_path %>
   #}
 
   {# we do not support LFS

software/gitlab/template/nginx-gitlab-http.conf.in

@@ -66,7 +66,6 @@ server {
 
   server_name {{ fqdn }};
   server_tokens off; ## Don't show the nginx version number, a security best practice
-  root {{ gitlab_work.location }}/public;
 
   ## Increase this if you want to upload large attachments
   ## Or if you want to accept large git objects over http
@@ -135,6 +134,15 @@ server {
     proxy_pass http://gitlab-workhorse;
   }
 
+  error_page 404 /404.html;
+  error_page 422 /422.html;
+  error_page 500 /500.html;
+  error_page 502 /502.html;
+  location ~ ^/(404|422|500|502)\.html$ {
+    root {{ gitlab_work.location }}/public;
+    internal;
+  }
+
   {# we don't support custom nginx configs
   <%= @custom_gitlab_server_config %>
   #}