Reference openstack_cacert to be distro agnostic

Author: MoteHue

doc/source/configuration/vault.rst

@@ -296,7 +296,7 @@ Configure Barbican
       [vault_plugin]
       vault_url = https://{{ kolla_internal_vip_address }}:8200
       use_ssl = True
-      ssl_ca_crt_file = /etc/ssl/certs/ca-bundle.trust.crt
+      ssl_ca_crt_file = {% raw %}{{ openstack_cacert }}{% endraw %}
       approle_role_id = {{ secrets_barbican_approle_role_id }}
       approle_secret_id = {{ secrets_barbican_approle_secret_id }}
       kv_mountpoint = barbican

etc/kayobe/environments/ci-multinode/kolla/config/barbican.conf

@@ -7,7 +7,7 @@ enabled_secretstore_plugins=vault_plugin
 [vault_plugin]
 vault_url = https://{{ kolla_internal_vip_address }}:8200
 use_ssl = True
-ssl_ca_crt_file = /etc/ssl/certs/ca-bundle.trust.crt
+ssl_ca_crt_file = {% raw %}{{ openstack_cacert }}{% endraw %}
 approle_role_id = {{ secrets_barbican_approle_role_id }}
 approle_secret_id = {{ secrets_barbican_approle_secret_id }}
 kv_mountpoint = barbican