www/mod_lookup_identity: Add new Port

mod_lookup_identity retrieves additional information about users
authenticated by the Apache HTTP Server. It queries the SSSD
InfoPipe service over D-Bus and stores user attributes and group
membership in request notes or environment variables for use by
web applications.

WWW: https://github.com/adelton/mod_lookup_identity

Sponsored by: Netzkommune GmbH

Required for: FreeIPA server port