Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1603185

Description of problem:

Version-Release number of selected component (if applicable):
Build:Satellite 6.4.0 snap12

How reproducible:
Always

Steps to Reproduce:
1. Create a Host on Compute resource RHV
2. Access the console of the host
3.

Actual results:
Fails with no bootable device

Expected results:
PXE should be used as first boot device

Additional info:
The First boot device should be Network PXE, but the box goes to HDD.
@roman plevka noticed that the Blank template is auto selected.
Blank template is a default template created in RHV.

This might be an issue as the blank template as the first boot device to HDD,
But should this behaviour be controlled by satellite when doing network provisioning