Migrate from kubernetes.io/ingress.class to spec.ingressClassName

[alexellis]

Expected Behaviour

spec.ingressClassName needs to be set on Ingress records created by the operator

Current Behaviour

The kubernetes.io/ingress.class annotation is still being used, and is deprecated

List All Possible Solutions and Workarounds

Update reconciliation behaviour and test out the change with Traefik and ingress-nginx separately.

Context

At some point the warning will become an error.

 go run . --kubeconfig ~/.kube/config 
I1020 14:20:08.391934 3319312 main.go:51] Starting FunctionIngress controller version: latest-dev commit: local-dev
I1020 14:20:08.394413 3319312 controller.go:70] Setting up event handlers
I1020 14:20:08.394456 3319312 core.go:72] Waiting for informer caches to sync
I1020 14:20:08.494815 3319312 core.go:77] Starting workers
I1020 14:20:08.494842 3319312 core.go:83] Started workers
I1020 14:20:26.381036 3319312 controller.go:116] Creating Ingress for: nodeinfo
W1020 14:20:26.452110 3319312 warnings.go:70] annotation "kubernetes.io/ingress.class" is deprecated, please use 'spec.ingressClassName' instead

[nitishkumar71]

I will take a look at this.