* Ignore empty strings in altnames.
* Add changelog.
* Add idempotence check without SAN.
* Fix bug in cryptography backend.
(cherry picked from commit 9b1cbcf3a4)
* Ignore empty strings in altnames.
* Add changelog.
* Add idempotence check without SAN.
* Fix bug in cryptography backend.
(cherry picked from commit 9b1cbcf3a4)