Description of problem:
If a VM has the OS TYPE set to RHEL 8.X a template cannot be create from a VM snaoshot

Version-Release number of selected component (if applicable):
RHV 4.5.3.7
vdsm version 4.50.3.7

How reproducible:
100%

Steps to Reproduce:
1. Create a VM with the OS type set the RHEL 8
2. Create a snapshot of the VM
3. Try to create a template from the snapshot

Actual results:
Hitting OK on the screen to create the template from the snapshot does nothing and produces no error message.

Expected results:
Should either create the template or report an erro

Additional info:
If the VM OS Type is set to Other this works.