[Feature] - Provide access to vpc ip addresses assigned to instances.

[knusbaum]

Is your feature request related to a problem? Please describe.
As far as I can tell, it is not possible to access the ip_address field for the vpc (or vpc2) attached to an instance ( https://www.vultr.com/api/#tag/instances/operation/list-instance-vpc2 )

This makes networking nodes difficult since the VPC ip_address is not available for use in other resources.

Describe the solution you'd like
I would like a field (maybe vpc2) for the vultr_instance type that contains at least the ip_address, but preferably the full structure returned by /v2/instances/{instance-id}/vpc2, in addition to or instead of the fields like vpc_ids and vpc2_ids (

terraform-provider-vultr/vultr/data_source_vultr_instance.go

Lines 149 to 153 in 8c46b8d

	"vpc2_ids": {
	Type: schema.TypeList,
	Computed: true,
	Elem: &schema.Schema{Type: schema.TypeString},
	},

)