Define haproxy config

ansible/roles/gateway/files/haproxy.cfg

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+global
+	log /dev/log	local0
+	log /dev/log	local1 notice
+	chroot /var/lib/haproxy
+	stats socket /run/haproxy/admin.sock mode 660 level admin
+	stats timeout 30s
+	user haproxy
+	group haproxy
+	daemon
+	maxconn 10000
+
+	# Default SSL material locations
+	ca-base /etc/ssl/certs
+	crt-base /etc/ssl/private
+
+	# Default ciphers to use on SSL-enabled listening sockets.
+	# For more information, see ciphers(1SSL). This list is from:
+	#  https://hynek.me/articles/hardening-your-web-servers-ssl-ciphers/
+	# An alternative list with additional directives can be obtained from
+	#  https://mozilla.github.io/server-side-tls/ssl-config-generator/?server=haproxy
+	ssl-default-bind-ciphers ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:RSA+AESGCM:RSA+AES:!aNULL:!MD5:!DSS
+	ssl-default-bind-options no-sslv3
+
+defaults
+	log	global
+	mode	http
+	option	httplog
+	option	dontlognull
+        timeout connect 10000
+        timeout client  50000
+        timeout server  50000
+	errorfile 400 /etc/haproxy/errors/400.http
+	errorfile 403 /etc/haproxy/errors/403.http
+	errorfile 408 /etc/haproxy/errors/408.http
+	errorfile 500 /etc/haproxy/errors/500.http
+	errorfile 502 /etc/haproxy/errors/502.http
+	errorfile 503 /etc/haproxy/errors/503.http
+	errorfile 504 /etc/haproxy/errors/504.http
+
+listen https
+	bind *:443
+	mode tcp
+	server default {{ upstream }}:443 check send-proxy
+
+listen http
+	bind *:80
+	stats enable
+	stats show-node
+	stats uri /haproxy
+	stats auth stats:{{ haproxy_stats_pass }}
+	server default {{ upstream }}:80 check
+
+
+listen matrix
+	bind *:8448
+	mode tcp
+	server default {{ upstream }}:8448 check
+
+listen gitea
+	bind *:3022
+	mode tcp
+	server default {{ upstream }}:3022 check