fix: Make ingress service port configurable via Helm values, consistent wi…

[rtalmaci]

Issue Summary:

When setting service.port to any other value than 32400, the ingress port number is not in-sync.
eg:

service:
  type: LoadBalancer
  port: 12345

Change

Change Ingress template to use the service port number from values rather than 32400 hardcoded

Other notes:

• No changes necessary to httproute, it already references the correct port number
• Used .Values.service.port for consistency with httproute, rather than referencing by port name

[cilindrox]

LGTM - thanks @rtalmaci - this will ship alongside a couple of other pending changes soon-ish.