Add ssl-passthrough-http-port validations
Add ssl-passthrough-http-port validations

There are two ways to break HAProxy config with invalid http port configurations. This change fixes both:

* Using the same port on ssl-passthrough (https) and http: HAProxy would be configured to send http content to a tcp backend
* Using a port without a single active endpoint - zero replicas or referencing and invalid port: backends with no active endpoints are removed from the configuration and HAProxy would be configured to use a backend that doesn’t exist

jcmoraisjr/haproxy-ingress,jcmoraisjr/haproxy-ingress