Migrate ejabberd uploads to mod_s3_upload and Garage

In addition to installing and configuring the new module, this also
enables public access to the S3 API via `bucket-name.s3.kosmos.org` as
well as Web access on `bucket-name.web.s3.kosmos.org` (when enabled).

Also includes some drive-by improvements to Chef attribute naming and
usage.

Co-authored-by: Greg Karékinian <greg@karekinian.com>

site-cookbooks/kosmos-ejabberd/templates/ejabberd.yml.erb

@@ -77,7 +77,6 @@ listen:
     request_handlers:
       "/ws": ejabberd_http_ws
       "/bosh": mod_bosh
-      "/upload": mod_http_upload
       "/admin": ejabberd_web_admin
     custom_headers:
       "Access-Control-Allow-Origin": "*"
@@ -261,6 +260,22 @@ modules:
   mod_stream_mgmt: {}
   mod_s2s_dialback: {}
   mod_http_api: {}
+  mod_muc_rtbl: {}
+  mod_s3_upload:
+    region: <%= @mod_s3_upload[:region] %>
+    bucket_url: <%= @mod_s3_upload[:bucket_url] %>
+    download_url: <%= @mod_s3_upload[:download_url] %>
+    access_key_id: <%= @mod_s3_upload[:key_id] %>
+    access_key_secret: <%= @mod_s3_upload[:secret_key] %>
+    max_size: 104857600
+    put_ttl: 600
+    set_public: true
+    service_name: 'S3 Upload'
+    access: local
+    hosts:
+<% @hosts.each do |host| -%>
+      - "upload.<%= host[:name] %>"
+<% end -%>
 
 allow_contrib_modules: true
 

site-cookbooks/kosmos-ejabberd/templates/vhost.yml.erb

@@ -21,5 +21,5 @@ host_config:
 
 append_host_config:
   "<%= @host[:name] %>":
-    <%= @host[:append_host_config].chomp %>
+<%= @host[:append_host_config].chomp %>