As queryd will, in the future, handle all LUXI request, queue jobs and
most likely perform various other tasks, it is renamed to luxid already.
This will safe some headache when upgrading Ganeti installations, as we
don't have to deal with a daemon rename.

Signed-off-by: Thomas Thrainer <thomasth@google.com>
Reviewed-by: Klaus Aehlig <aehlig@google.com>