Updates Traefik to v2.2 and enables global entry point redirection http to https

See also PR: https://github.com/containous/traefik/pull/6417

templates/docker-compose.traefik.yml.j2

@@ -8,7 +8,7 @@ networks:
 services:
   # Load Balancer / SSL / Web Server
   revproxy:
-    image: traefik:v2.1
+    image: traefik:v2.2
     restart: always
     networks:
       - public

templates/traefik.toml.j2

@@ -6,6 +6,11 @@ defaultEntryPoints = ["web", "websecure"]
 [entryPoints]
   [entryPoints.web]
     address = ":80"
+    [entryPoints.web.http]
+      [entryPoints.web.http.redirections]
+        [entryPoints.web.http.redirections.entryPoint]
+          to = "websecure"
+          scheme = "https"
   [entryPoints.websecure]
     address = ":443"