net/ceph: update to 12.2.4

• Convert to USE_OPENLDAP
• Drop LLD dependency [1]
• Limit portscout reports to 12.*

Changes: https://ceph.com/releases/v12-2-3-luminous-released/
Changes: https://ceph.com/releases/v12-2-4-luminous-released/
PR: 224805 [1] 226376
Submitted by: Willem Jan Withagen (maintainer)