Set max size for external S3 upload requests

Fix uploads failing when exceeding the default nginx limit

site-cookbooks/kosmos_garage/attributes/default.rb

@@ -10,3 +10,4 @@ node.default['garage']['s3_api_root_domain'] = '.s3.garage.localhost'
 node.default['garage']['s3_web_root_domain'] = '.web.garage.localhost'
 node.default['garage']['s3_web_domains']     = []
 node.default['garage']['xmpp_upload_bucket'] = nil
+node.default['garage']['max_part_upload_size_mb'] = 101

site-cookbooks/kosmos_garage/recipes/nginx_s3.rb

@@ -17,6 +17,7 @@ openresty_site domain_name do
   variables server_name: "#{domain_name} #{server_name}",
             domain_name: domain_name,
             xmpp_upload_bucket: node['garage']['xmpp_upload_bucket'],
+            max_part_upload_size_mb: node['garage']["max_part_upload_size_mb"],
             ssl_cert:    "/etc/letsencrypt/live/#{domain_name}/fullchain.pem",
             ssl_key:     "/etc/letsencrypt/live/#{domain_name}/privkey.pem"
 end

site-cookbooks/kosmos_garage/templates/nginx_conf_s3.erb

@@ -16,6 +16,8 @@ server {
 
   error_page 401 403 404 500 /__empty-page.html;
 
+  client_max_body_size <%= @max_part_upload_size_mb %>m;
+
   location = /__empty-page.html {
     internal;
     return 200 "";