certificate.

The trusted roots don't need to be the same for client and server when using client authentication.
Clients might rely on the platform certificates and servers might use a private
organization-specific certificate authority.

By default `HeldCertificate` instances expire after 24 hours. Use `duration()` to adjust.

```
20:09:10.216 [200 OK] s3.GetObject veeam-minio01:9000/vbo/Veeam/Backup365/vbotest/Organizations/6571606ecbc4455dbfe23b83f6f45597/Webs/ca2d0986229b4ec88e3a217ef8f04a1d/Items/efaa67764b304e77badb213d131beab6/f4f0cf600f494c3eb702d8eafe0fabcc.aac07493e6cd4c71845d2495a4e1e19b 139.178.68.158    9.789ms      ↑ 90 B ↓ 8.5 KiB

```
# X.509 Certificate options
#
# DN options

# The organization of the subject.
organization = "Example Inc."

# The organizational unit of the subject.
#unit = "sleeping dept."

# The state of the certificate owner.
state = "Example"