Mark private key tf output as sensitive

Author: m-bull

roles/cluster_infra/templates/outputs.tf.j2

@@ -7,6 +7,7 @@ output "cluster_gateway_ip" {
 output "cluster_ssh_private_key" {
   description = "The private component of the keypair generated on cluster provision"
   value = openstack_compute_keypair_v2.cluster_keypair.private_key
+  sensitive   = true
 }
 {% endif %}