PVC template root index parameter not matching boot disk

Always / N%

1. create two source VMs with two disks on two different type busses (Scsi,Sata)
2. use the first disk of first bus as boot disk on first vm
3. use the first disk of second buss as boot disk on second vm
4. create migration plan with a PVC template using the root disk index

PVC template map the first boot differently then the actual boot disk

PVC template map the first boot same as the actual boot disk

This is not the same as MTV-2231, but fix for MTV-2231 should not break this one