this is a point of divergance form kolla

they removed this since COPY_ALWAYS was the default and no one used
COPY_ONCE so we probably should do that eventually.

this is not wrong its just unnecessary for us to support anything else in tcib.

https://github.com/openstack-k8s-operators/tcib/blob/main/container-images/kolla/base/set_configs.py#L371-L386 can be simplified

Originally posted by @SeanMooney in #698 (comment)