[Bug] spec.route.host - field is immutable

[davidkarlsen]

Describe the bug

troller-manager-6558fd8d4d-5wkrx manager 1.6921724618218668e+09     INFO    IngressReconciler       reconciling route       {"controller": "grafana", "controllerGroup": "grafana.integreatly.org", "controllerKind": "Grafana", "Grafana": {"name":"grafana","namespace":"grafana-operator"}, "namespace": "grafana-operator", "name": "grafana", "reconcileID": "66c721f0-7350-4004-9f39-c02069142a08", "platform": "openshift"}
grafana-operator-controller-manager-6558fd8d4d-5wkrx manager 1.6921724618343654e+09     ERROR   GrafanaReconciler       reconciler error in stage       {"controller": "grafana", "controllerGroup": "grafana.integreatly.org", "controllerKind": "Grafana", "Grafana": {"name":"grafana","namespace":"grafana-operator"}, "namespace": "grafana-operator", "name": "grafana", "reconcileID": "66c721f0-7350-4004-9f39-c02069142a08", "stage": "ingress", "error": "Route.route.openshift.io \"grafana-route\" is invalid: spec.host: Invalid value: \"grafana.apps.ftm-aro-dev-nore.dev.payments-paymentengine-dcon.i.tech-05.net\": field is immutable"}
grafana-operator-controller-manager-6558fd8d4d-5wkrx manager github.com/grafana-operator/grafana-operator/v5/controllers.(*GrafanaReconciler).Reconcile
grafana-operator-controller-manager-6558fd8d4d-5wkrx manager    github.com/grafana-operator/grafana-operator/v5/controllers/grafana_controller.go:105
grafana-operator-controller-manager-6558fd8d4d-5wkrx manager sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Reconcile
grafana-operator-controller-manager-6558fd8d4d-5wkrx manager    sigs.k8s.io/controller-runtime@v0.13.0/pkg/internal/controller/controller.go:121
grafana-operator-controller-manager-6558fd8d4d-5wkrx manager sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler
grafana-operator-controller-manager-6558fd8d4d-5wkrx manager    sigs.k8s.io/controller-runtime@v0.13.0/pkg/internal/controller/controller.go:320
grafana-operator-controller-manager-6558fd8d4d-5wkrx manager sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem
grafana-operator-controller-manager-6558fd8d4d-5wkrx manager    sigs.k8s.io/controller-runtime@v0.13.0/pkg/internal/controller/controller.go:273
grafana-operator-controller-manager-6558fd8d4d-5wkrx manager sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func2.2
grafana-operator-controller-manager-6558fd8d4d-5wkrx manager    sigs.k8s.io/controller-runtime@v0.13.0/pkg/internal/controller/controller.go:234

Version
5.3.0

To Reproduce
Steps to reproduce the behavior:

1. Create a grafana instance on openshift, and specify spec.route.host

Expected behavior
Should set host field in created route to specified value

Suspect component/Location where the bug might be occurring
See stacktrace

Screenshots
See stacktrace

Runtime (please complete the following information):

• OS: Linux
• Grafana Operator Version - as I said, 5.3.0
• Environment: openshift on azure
• Deployment type: operator
• Other: N/A

Additional context
Add any other context about the problem here.

[davidkarlsen]

Looks a bit like #646

[NissesSenap]

Sounds resonable @davidkarlsen.
Could you create a PR to fix it?
You can take inspiration from: #644

[davidkarlsen]

@NissesSenap PTAL at my draft PR

[NissesSenap]

solved in #1207