[Refactor] Remove ingress in service controller

[owenowenisme]

Why are these changes needed?

Refer to issue #2707

Related issue number

"Closes #2707"

Checks

k get pods
NAME                                                          READY   STATUS    RESTARTS   AGE
kuberay-operator-696bc84cc4-vtrqs                             1/1     Running   0          3m14s
rayservice-sample-raycluster-bcb7b-head-5ppzt                 1/1     Running   0          2m51s
rayservice-sample-raycluster-bcb7b-small-group-worker-mzvck   1/1     Running   0          2m51s

Only RayCluster controllers logs are left.

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • This PR is not tested :(

[kevin85421]

Nice!