IFP: Add domain nodes Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

IFP: Export nodes IFP now exports cached users and groups in introspection. After a user is cached with: dbus-send --print-reply --system \ --dest=org.freedesktop.sssd.infopipe \ /org/freedesktop/sssd/infopipe/Users/ipaldap/397400000 \ org.freedesktop.sssd.infopipe.Cache.Object.Store And Introspection called with: dbus-send --print-reply --system \ --dest=org.freedesktop.sssd.infopipe \ /org/freedesktop/sssd/infopipe/Users \ org.freedesktop.DBus.Introspectable.Introspect The cached users would be visible in the Introspection XML as: <node name="ipaldap/397400000" /> </node> Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>