TLS only configured if secretName is set

[dozer75]

The TLS section of the ingress is not configured unless a secretName is provided, however this is not always necessary. An NGINX ingress controller can have a default certificate configured using the default-ssl-certificate. In these cases the NGINX will always use the certificate configured here for TLS where this is not configured in the ingress.

The issue is here. The conditional setting should not use secretName only as a condition for enabling TLS in the ingress. It should also enable e.g. if tlsHost are set or maybe a new enableTLS flag.