X509-types insert markers are used by 'awk' to insert data at specific
points in the easyrsa-openssl.cnf file in use.
The checks are moved to below more important imput checks
For build-ca, the check is ONLY done if EASYRSA_EXTRA_EXTS is defined.
This is exceedingly unlikely, because EASYRSA_EXTRA_EXTS is not documented.
For sign-req, the check is only done if --copy-ext isused.
Also, remove an over-indent in "Confirm use of NS extestions"
Signed-off-by: Richard T Bonhomme <tincantech@protonmail.com>