cinder: fix condition to copy backend TLS certs

We need to import copy-certs.yml when either copying a CA file into
containers, or when a service has backend TLS enabled. Cinder only
included the former condition. This patch fixes it.

TrivialFix

Change-Id: I70aab86055cadad9abf28956c6d6e8a90a9668c0
(cherry picked from commit adf492b)

Author: markgoddard

ansible/roles/cinder/tasks/config.yml

@@ -39,7 +39,7 @@
 
 - include_tasks: copy-certs.yml
   when:
-    - kolla_copy_ca_into_containers | bool
+    - kolla_copy_ca_into_containers | bool or cinder_enable_tls_backend | bool
 
 - name: Copying over config.json files for services
   template: