Make ingresses optional

[dvianello]

Is your feature request related to a problem? Please describe. I do not want to create an ingress for querier, as there's a local grafana instance that will access it in-cluster.

Describe the solution you'd like to see A bool variable in the CRD spec that disables ingress creation.

Describe alternatives you've considered N/A

Additional context N/A

[dvianello]

Ah, looks like that leaving out

HTTPIngress: {}

from the spec works, but the Operator didn't remove the ingress on CRD change.

[tarokkk]

This should have clear documentation