VMs boot in uEFI by default, on TKG 2.1

quick note to myself, thx to sagar for helping me figure this out

 1.6 TKG supported  BIOS booting by default

in newer TKG versions 2.1 , we support  EFI by default

EFI is required for PCI passthrough

PCI Passthrough is currently required to run GPU workloads on TKG

In any case,  as shown below there is a 

1.6 cluster on the left

and a 2.1 on the right

Clicking on the Boot options (click the vM, then go to Edit Settings -> Boot options) We can see 

1.6 default boots as bios

2.1 default boots as efi

Thus , the older Virtual machine