net-mgmt/librenms: Update to 22.2.1

re: https://github.com/librenms/librenms/releases/tag/22.2.1

This port update skips over several releases.
See: https://github.com/librenms/librenms/releases

See UPDATING for details on storage directory which needs to
move to /var/db/librenms

LiberNMS wants to write to the %%WWWDIR%%/storage directory. To comply
with man 7 hier, this entry is now a symlink to /var/db/librenms/storage
Please adjust your filesystem accordingly.

The contrib directory has been removed from the upstream tarball. As such,
the port now installs the log rotation file to
/${PREFIX}/etc/newsyslog.conf.d/librenms.conf.sample

PR: 260085 261031