Move z9-host-specific configs and templates into z9 subdirectories

playbooks/files/z9/configs/light/nginx/http_handler.conf

@@ -0,0 +1,14 @@
+server {
+    listen 80 default_server;
+    #listen [::]:80 default_server;
+    server_name _;
+
+    location /.well-known/acme-challenge/ {
+        autoindex on;
+        root /webroot-for-acme-challenge;
+    }
+
+    location / {
+        return 301 https://$host$request_uri;
+    }
+}