Processing vars at init-pki was intentionally kept to minimum, due to
complications with user expectations verses Easy-RSA preferences.
This overhaul aims to finalise Easy-RSA interference with vars.
1. Prefer that vars is in the PKI but only force that at init-pki,
when no other vars files can be found. Otherwise, do not create a
template vars and leave it to the user, with appropriate messages.
2. Fail all commands, except init-pki, if more than one vars exists.
3. Take special care of 'init-pki soft'.
4. For existing PKIs, be aware that vars may NOT exist.
This patch is less complicated than it appears to be.
Most of the changes are either comments or user messages.
There are some new state flags to manage the location of vars,
which are used to decide when a new vars is created and control
user messages.
Closes: #651
New message for "Using x509-types directory: $EASYRSA_EXT_DIR"
Closes: #654
Signed-off-by: Richard T Bonhomme <tincantech@protonmail.com>
69afb5960e