Expand description in service discovery

Hi all!

By default the description in a service discovery it’s equal to @SERVICENAME@

It can be changed using “Custom display scan” in “Advanced options”.

Why not enable by default the display, in the description, of every macro?

Eg.

$description = "@SERVICENAME@ [macro1 = $macro1$] [macro2 = $macro2$] … [macroN = $macroN$]";