net-mgmt/icingaweb2-module-x509: New port: Automates certificate monitoring

The certificate monitoring module for Icinga keeps track of
certificates as they are deployed in a network environment. It does
this by scanning networks for TLS services and collects whatever
certificates it finds along the way. The certificates are verified using
its own trust store.
PR: 257163
Reported by: gettoknowmi <gettoknowmi@yahoo.com>