ingress: Proxy AMQP

Passing port 5671 through the ingress-nginx proxy to the `rabbitmq`
service will allow clients outside the cluster to connect to it.

While we're at it, we'll move the definition of the `tcp-services`
ConfigMap to its own file to make it easier to maintain.

ingress/ingress-nginx.yaml

@@ -31,15 +31,6 @@ metadata:
   name: ingress-nginx-admission
   namespace: ingress-nginx
 ---
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: tcp-services
-  namespace: ingress-nginx
-data:
-  8883: home-assistant/mosquitto:8883
-
----
 apiVersion: rbac.authorization.k8s.io/v1
 kind: Role
 metadata: