Add traefik (#1916)

* Add mosquitto broker
* Add documetation to mosquitto
* Add traefik

traefik/Dockerfile

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+FROM traefik:1.7.5-alpine
+
+LABEL maintainer="Luis Coutinho <luis@luiscoutinho.pt>"
+
+COPY traefik.toml acme.json /
+
+RUN chmod 600 /acme.json

traefik/traefik.toml

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+defaultEntryPoints = ["http", "https"]
+
+[entryPoints]
+  [entryPoints.http]
+  address = ":80"
+    [entryPoints.http.redirect]
+      entryPoint = "https"
+  [entryPoints.https]
+  address = ":443"
+    [entryPoints.https.tls]
+
+[web]
+address = ":8080"
+[acme]
+email = "email@example.org"
+storage = "acme.json"
+entryPoint = "https"
+onHostRule = true
+  [acme.httpChallenge]
+    entryPoint = "http"
+
+[[acme.domais]]
+  main = "localhost"