[helm] certbot/nginx: add almost working version

apps/nginx-certbot-helm/nginx/http.conf

@@ -0,0 +1,16 @@
+server {
+    listen *:80;
+    listen [::]:80;
+
+    server_name _;
+
+    # Forward for certbot
+    location /.well-known/acme-challenge/ {
+        root /usr/share/nginx/html;
+    }
+
+    # Everything else -> ssl
+    location / {
+        return 301 https://$host$request_uri;
+    }
+}