WIP: Feature/caddy frontend haproxy
- 
generate configuration for frontend haproxy like in default-virtualhost.conf.in - 
implement logging per slave  - 
reimplement [caddy-wrapper] - 
correctly terminate SSLwithSNIin haproxy with ssl_fc_sni and crt-list - 
carefully implement path normalization  - 
check for performance and scalabilility  - 
implement apache compatible access_log, expose haproxy as frontend_log  - 
reimplement # Access to server-status Caddy-style - 
reimplement * {{ not_found_file }}, by using local nginx and exposing the file - 
reimplement monitor-caddy-server-status-wrapper - 
provide proper fixes for !830 (comment 137260)  - 
(maybe) merge frontend and backend haproxy into one process