caddy-frontend: Add port-redirection config file generation

software/caddy-frontend/instance-apache-frontend.cfg

@@ -14,6 +14,7 @@ parts =
   frontend-caddy-graceful
   frontend-nginx-graceful
   not-found-html
+  port-redirection
   promise-frontend-caddy-configuration
   promise-caddy-frontend-v4-https
   promise-caddy-frontend-v4-http
@@ -768,3 +769,13 @@ port = $${instance-parameter:configuration.plain_nginx_port}
 recipe = slapos.cookbook:wrapper
 command-line = ${buildout:bin-directory}/is-process-older-than-dependency-set $${nginx-configuration:pid-file} 
 wrapper-path = $${directory:promise}/promise-nginx-is-process-older-than-dependency-set
+
+[port-redirection]
+<= jinja2-template-base
+template = inline:
+  [{"srcPort": 80, "destPort": {{ http_port }}}, {"srcPort": 443, "destPort": {{ https_port }}}]
+rendered = $${buildout:directory}/.slapos-port-redirect
+mode = 0644
+extra-context =
+    key http_port instance-parameter:configuration.plain_http_port
+    key https_port instance-parameter:configuration.port

[Łukasz Nowak]

Attention! buildout.hash.cfg was not updated, I fixed it in f6e418a9, but please pay attention to this file during review.

Or is it time to have some check that buildout.hash.cfg values are updated. But what to do with addition of files? Removal will be supported, as update-hash will fail.