Change copy-cacerts behaviour

So far, the certificates were not part of config.json
files for containers. With future patches that will remove
container restarts based on triggers from config and
service-copy-cert, it is important that all files that change
during config are specified in config.json so that
kolla-set-configs --check can detect those changes and based
on that restart the container. This patch provides prerequisite
for future patch in kolla-ansible.

Comments from kevko:

The script also takes into account whether review [1] is
merged or not, ensuring that it will function correctly in
both cases thanks to review [2], because using the state
file, we can effectively verify whether the config.json that
copies CA certs to /var/lib/kolla/share is being used or not.

If we didn’t handle it this way, we would have to rely on
checking whether the directory /var/lib/kolla/share exists or
some another magic, which is insufficient because various
states and combinations of Kolla image and Kolla-Ansible
versions could result in certificates always being copied.
This method provides a clear and definitive distinction.

[1] https://review.opendev.org/c/openstack/kolla-ansible/+/924651
[2] https://review.opendev.org/c/openstack/kolla/+/915440

Change-Id: I5120f1874f25a9ca8326e6db8b12dee4c81feb56
Signed-off-by: Roman Krček <roman.krcek@tietoevry.com>
Co-Authored-By: Michal Arbet <michal.arbet@ultimum.io>
Needed-By: https://review.opendev.org/c/openstack/kolla-ansible/+/924651

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