ipa[server,replica]: Enable freeipa-trust service if adtrust is enabled

The freeipa-trust service has not been added if adtrust was enabled. For
ipareplica the addition of freeipa-replication has been removed as the
used port is not used anymore since some time.

Fixes: #83 (when installing with ipaserver_setup_adtrust: true the firewalld
service freeipa-trust is not added)