feat: convert virtual circuit resource & datasource to equinix-sdk-go (…

…#700)

This updates the `metal_virtual_circuit` resource and data source to use
`equinix-sdk-go` instead of `packngo`. As mentioned in #402, the
`packngo` SDK has been deprecated, and moving to `equinix-sdk-go` makes
it possible for these resources to gain new features in the future.

As an added bonus, the affected code has also been moved to
`internal/resources/metal` to align with #106.

docs/data-sources/equinix_metal_virtual_circuit.md

@@ -5,7 +5,7 @@ subcategory: "Metal"
 # equinix_metal_virtual_circuit (Data Source)
 
 Use this data source to retrieve a virtual circuit resource from
-[Equinix Fabric - software-defined interconnections](https://metal.equinix.com/developers/docs/networking/fabric/)
+[Equinix Fabric - software-defined interconnections](https://deploy.equinix.com/developers/docs/metal/interconnections/introduction/)
 
 See the [Virtual Routing and Forwarding documentation](https://deploy.equinix.com/developers/docs/metal/layer2-networking/vrf/) for product details and API reference material.
 
@@ -38,7 +38,7 @@ In addition to all arguments above, the following attributes are exported:
 * `port_id` - UUID of the Connection Port where the VC is scoped to.
 * `project_id` - ID of project to which the VC belongs.
 * `vnid`, `nni_vlan`, `nni_nvid` - VLAN parameters, see the
-[documentation for Equinix Fabric](https://metal.equinix.com/developers/docs/networking/fabric/).
+[documentation for Equinix Fabric](https://deploy.equinix.com/developers/docs/metal/interconnections/introduction/).
 * `description` - Description for the Virtual Circuit resource.
 * `tags` - Tags for the Virtual Circuit resource.
 * `speed` - Speed of the Virtual Circuit resource.
@@ -51,4 +51,4 @@ In addition to all arguments above, the following attributes are exported:
   * For a /30 block, it will have four IP addresses, but the first and last IP addresses are not usable. We will default to the first usable IP address for the metal_ip.
 * `metal_ip` - The Metal IP address for the SVI (Switch Virtual Interface) of the VirtualCircuit. Will default to the first usable IP in the subnet.
 * `customer_ip` - The Customer IP address which the CSR switch will peer with. Will default to the other usable IP in the subnet.
-* `md5` - The password that can be set for the VRF BGP peer
+* `md5` - The password that can be set for the VRF BGP peer

docs/resources/equinix_metal_virtual_circuit.md

@@ -5,7 +5,7 @@ subcategory: "Metal"
 # equinix_metal_virtual_circuit (Resource)
 
 Use this resource to associate VLAN with a Dedicated Port from
-[Equinix Fabric - software-defined interconnections](https://metal.equinix.com/developers/docs/networking/fabric/#associating-a-vlan-with-a-dedicated-port).
+[Equinix Fabric - software-defined interconnections](https://deploy.equinix.com/developers/docs/metal/interconnections/introduction/#associating-a-vlan-with-a-dedicated-port).
 
 See the [Virtual Routing and Forwarding documentation](https://deploy.equinix.com/developers/docs/metal/layer2-networking/vrf/) for product details and API reference material.
 
@@ -67,8 +67,8 @@ The following arguments are supported:
 In addition to all arguments above, the following attributes are exported:
 
 * `status` - Status of the virtal circuit.
-* `vnid` - VNID VLAN parameter, see the [documentation for Equinix Fabric](https://metal.equinix.com/developers/docs/networking/fabric/).
-* `nni_vnid` - NNI VLAN parameters, see the [documentation for Equinix Fabric](https://metal.equinix.com/developers/docs/networking/fabric/).
+* `vnid` - VNID VLAN parameter, see the [documentation for Equinix Fabric](https://deploy.equinix.com/developers/docs/metal/interconnections/introduction/).
+* `nni_vnid` - NNI VLAN parameters, see the [documentation for Equinix Fabric](https://deploy.equinix.com/developers/docs/metal/interconnections/introduction/).
 
 ## Import
 

equinix/provider.go

@@ -11,6 +11,7 @@ import (
 	"github.com/equinix/terraform-provider-equinix/internal/config"
 	fabric_connection "github.com/equinix/terraform-provider-equinix/internal/resources/fabric/connection"
 	fabric_network "github.com/equinix/terraform-provider-equinix/internal/resources/fabric/network"
+	"github.com/equinix/terraform-provider-equinix/internal/resources/metal/virtual_circuit"
 	"github.com/equinix/terraform-provider-equinix/internal/resources/metal/vrf"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
@@ -112,7 +113,7 @@ func Provider() *schema.Provider {
 			"equinix_metal_port":                 dataSourceMetalPort(),
 			"equinix_metal_reserved_ip_block":    dataSourceMetalReservedIPBlock(),
 			"equinix_metal_spot_market_request":  dataSourceMetalSpotMarketRequest(),
-			"equinix_metal_virtual_circuit":      dataSourceMetalVirtualCircuit(),
+			"equinix_metal_virtual_circuit":      virtual_circuit.DataSource(),
 			"equinix_metal_vrf":                  vrf.DataSource(),
 		},
 		ResourcesMap: map[string]*schema.Resource{
@@ -139,7 +140,7 @@ func Provider() *schema.Provider {
 			"equinix_metal_reserved_ip_block":    resourceMetalReservedIPBlock(),
 			"equinix_metal_ip_attachment":        resourceMetalIPAttachment(),
 			"equinix_metal_spot_market_request":  resourceMetalSpotMarketRequest(),
-			"equinix_metal_virtual_circuit":      resourceMetalVirtualCircuit(),
+			"equinix_metal_virtual_circuit":      virtual_circuit.Resource(),
 			"equinix_metal_vrf":                  vrf.Resource(),
 			"equinix_metal_bgp_session":          resourceMetalBGPSession(),
 			"equinix_metal_port_vlan_attachment": resourceMetalPortVlanAttachment(),