NIC throws warnings re deprecated annotations when ingressClassName isn't used

[vepatel]

Describe the bug
NIC throws warnings re deprecated annotation kubernetes.io/ingress.class when ingressClassName isn't used

To Reproduce
Steps to reproduce the behaviour:

1. Deploy IC on a k8s cluster with default IngressClass
2. Deploy an application with Ingress resource (omit ingressClassName field under spec:)
3. Check IC logs

Expected behaviour
There shouldn't be any mentions of the said Ingress in the logs

Current behaviour

W1019 10:17:52.179344       1 controller.go:3985] Using the DEPRECATED annotation 'kubernetes.io/ingress.class'. The 'ingressClassName' field will be ignored.
W1019 10:17:52.727485       1 controller.go:3985] Using the DEPRECATED annotation 'kubernetes.io/ingress.class'. The 'ingressClassName' field will be ignored.
W1019 10:20:49.168243       1 controller.go:3985] Using the DEPRECATED annotation 'kubernetes.io/ingress.class'. The 'ingressClassName' field will be ignored.

[github-actions]

Hi @vepatel thanks for reporting!

Be sure to check out the docs and the Contributing Guidelines while you wait for a human to take a look at this 🙂

Cheers!