[cups] name of shared printers changed between Ubuntu 16.04/CUPS v2.1.3 and Ubuntu 20.04/CUPS v2.3.1

[Carsten Rose]

Dear all

We're migrating some desktop hosts from Ubuntu 16.04 to 20.04 and 
realized that the printer names changed on Ubuntu 20.04. We use a 
central CUPS printserver and all clients connects to them.

Printserver is `print2` (still Ubuntu 16.04), local printer names are 
k34, k40, k49color and so on.

CUPS client on Ubuntu 16.04 shows (ok): k34, k40, k49color

CUPS client on Ubuntu 20.04 shows (bad):
   K34_HP_LJ_P3015_print2
   K40_HP_LJ_P3015_print2
   K49_HP_OfficeJet_Pro_X451dw_Color_print2

Any hint on how to remove the printer type and print server name from 
the printer name on the CUPS client?

On Ubuntu 16.04: CUPS Version v2.1.3
On Ubuntu 20.04: CUPS Version v2.3.1

Any hints are appreciated.

Thanks
Carsten