CI: enable libvirt TLS in TLS job

Depends-On: https://review.opendev.org/c/openstack/kolla-ansible/+/826723
Change-Id: I52ffa0b23ce2ae54fbfe5879a25b128ca1864195

playbooks/kayobe-overcloud-base/globals.yml.j2

@@ -21,4 +21,5 @@ kolla_copy_ca_into_containers: "yes"
 kolla_enable_tls_backend: "yes"
 openstack_cacert: "/etc/pki/tls/certs/ca-bundle.crt"
 kolla_admin_openrc_cacert: "{% raw %}{{ '{{' }} kolla_certificates_dir }}{% endraw %}/ca/root.crt"
+libvirt_tls: "yes"
 {% endif %}