remove authentication in acme dir

apache/sitegen.conf

@@ -3,4 +3,6 @@ Alias "/.well-known/acme-challenge/" "/tmp/acme-challenge/.well-known/acme-chall
   Options -Indexes -FollowSymLinks
   AllowOverride All
   Require all granted
-</Directory>
+  Satisfy Any
+  Allow from all
+</Directory>