The Zun configuration file does not set the CA for the clients the Zun
service uses: zun_client, glance_client, neutron_client, cinder_client,
and placement_client. This will cause the Zun service to fail when
TLS is enabled in the OpenStack deployment.
Depends-On: https://review.opendev.org/#/c/736809
Change-Id: Ieed843c890210608699c1a63deed66c9bb63986c