Vault's new TLS devvault mode has two nits with certificate
construction:
1. The CA doesn't need to include any SANs, as these aren't checked.
Technically this means the CA could be reused as a leaf certificate
for the one specified IP SAN, which is less desirable.
2. Add hostname to SANs in addition to CNs. This is a best practice, as
(when the CN is a hostname), it is preferable to have everything in
SANs as well.
Neither of these are major changes.
Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com>
Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com>
