[requirement] Enhance the ingress resource to support the old and new API

[cmoulliard]

Requirement

Enhance the ingress resource to support the old deprecated API and the new

As the bitnami common.capabilities.ingress.apiVersion function is able to return the appropriate apiVersion for ingress which could be:

• extensions/v1beta1,
• networking.k8s.io/v1beta1
• networking.k8s.io/v1 (latest supported)

then additional logic will be needed to support to populate the correct Backend or PathType sections of the Ingress.spec

Notable changes concerning the new API are:

• spec.backend is renamed to spec.defaultBackend
• The backend serviceName field is renamed to service.name
• Numeric backend servicePort fields are renamed to service.port.number
• String backend servicePort fields are renamed to service.port.name
• pathType is now required for each specified path. Options are Prefix, Exact, and ImplementationSpecific. To match the undefined v1beta1 behavior, use ImplementationSpecific.