Move the Interface type and its consts.
diff --git a/acceptance/openstack/identity/v3/endpoint_test.go b/acceptance/openstack/identity/v3/endpoint_test.go
index 5f166c4..b8c1dcc 100644
--- a/acceptance/openstack/identity/v3/endpoint_test.go
+++ b/acceptance/openstack/identity/v3/endpoint_test.go
@@ -66,7 +66,7 @@
 
 	// Enumerate the endpoints available for this service.
 	endpointResults, err := endpoints3.List(client, endpoints3.ListOpts{
-		Interface: endpoints3.InterfacePublic,
+		Interface: gophercloud.InterfacePublic,
 		ServiceID: computeService.ID,
 	})