Add VPCInterfaceUpdateOptions (#825)

Author: zliang-akamai

interfaces.go

@@ -122,8 +122,7 @@ type LinodeInterfaceCreateOptions struct {
 type LinodeInterfaceUpdateOptions struct {
 	DefaultRoute *InterfaceDefaultRoute        `json:"default_route,omitempty"`
 	Public       *PublicInterfaceCreateOptions `json:"public,omitempty"`
-	VPC          *VPCInterfaceCreateOptions    `json:"vpc,omitempty"`
-	VLAN         *VLANInterface                `json:"vlan,omitempty"`
+	VPC          *VPCInterfaceUpdateOptions    `json:"vpc,omitempty"`
 }
 
 type PublicInterfaceCreateOptions struct {
@@ -189,6 +188,11 @@ type VPCInterfaceIPv6RangeCreateOptions struct {
 	Range string `json:"range"`
 }
 
+type VPCInterfaceUpdateOptions struct {
+	IPv4 *VPCInterfaceIPv4CreateOptions `json:"ipv4,omitempty"`
+	IPv6 *VPCInterfaceIPv6CreateOptions `json:"ipv6,omitempty"`
+}
+
 type LinodeInterfacesUpgrade struct {
 	ConfigID   int               `json:"config_id"`
 	DryRun     bool              `json:"dry_run"`

test/unit/interface_test.go

@@ -225,7 +225,7 @@ func TestInterface_UpdateVPC(t *testing.T) {
 			IPv4: linodego.Pointer(true),
 			IPv6: linodego.Pointer(true),
 		},
-		VPC: &linodego.VPCInterfaceCreateOptions{
+		VPC: &linodego.VPCInterfaceUpdateOptions{
 			IPv4: &linodego.VPCInterfaceIPv4CreateOptions{
 				Addresses: &[]linodego.VPCInterfaceIPv4AddressCreateOptions{
 					{