Add Vrf to be assigned to the resource claim

[packetlifter]

What would you like to be added?

spec field for assigning vrf like so:

type PrefixSpec struct {
	... ommitted
	// The NetBox Vrf to be assigned to this resource in NetBox. Use the `name` value instead of the `slug` value
	// Field is immutable, not required
	// Example: "blue" or "red"
	//+kubebuilder:validation:XValidation:rule="self == oldSelf",message="Field 'vrf' is immutable"
	Vrf string `json:"vrf,omitempty"`

Why is this needed?

Ability to assign the netbox objects to a vrf.

[bruelea]

Thanks for the suggestion. The field could be handled in a similar way as the 'site' and 'tenant' fields. That way it should also be backwards compatible. Do you want to create an PR for Vrf support?