Store Gitea data (avatars, attachments, etc.) in Garage/S3

Also adds a new garage gateway role, which only allows RPC (inter-node)
traffic to Garage.

site-cookbooks/kosmos_gitea/recipes/nginx.rb

@@ -5,7 +5,7 @@
 
 include_recipe "kosmos-nginx"
 
-domain  = node["kosmos_gitea"]["nginx"]["domain"]
+domain = node["gitea"]["nginx"]["domain"]
 
 # upstream_ip_addresses = []
 # search(:node, "role:gitea").each do |n|
@@ -28,7 +28,7 @@ template "#{node['nginx']['dir']}/sites-available/#{domain}" do
             ssl_cert:      "/etc/letsencrypt/live/#{domain}/fullchain.pem",
             ssl_key:       "/etc/letsencrypt/live/#{domain}/privkey.pem",
             upstream_host: upstream_ip_address,
-            upstream_port: node["kosmos_gitea"]["port"]
+            upstream_port: node["gitea"]["port"]
 
   notifies :reload, 'service[nginx]', :delayed
 end