What are you seeing

Currently, the vars template of easy-rsa 3.0 differs form the original var.example file.

For example, all vars are exposed through shell builtin export while vars.example is using set_var.

I would like recreate the easy-rsa 3 vars template file based on the original vars.example to come closer.

Before I going the create a PR, i would like to ask if a maintainer is interested into this. It unknown to me I we could test that it won't break existing setups.