Do not query the admin project

We should use the provided credentials and not assume any admin
access.

terraform/main.tf

@@ -18,14 +18,10 @@ data "openstack_networking_network_v2" "external" {
   name = "external"
 }
 
-data "openstack_identity_project_v3" "test_tenant" {
-  name = "admin"
-}
-
 data "openstack_networking_secgroup_v2" "default" {
   name = "default"
-  tenant_id = data.openstack_identity_project_v3.test_tenant.id
 }
+
 # Create virtual machine
 resource "openstack_compute_instance_v2" "nginx" {
   name        = "nginx-host"