Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1615733

Description of problem:
While doing Image based provisioning, you cannot add more SCSI controller to the provisioned VM

Version-Release number of selected component (if applicable):
Build: Satellite 6.4.0 snap17

How reproducible:
Always

Steps to Reproduce:
1. Create a VM using Image based provisioning
2. In the VM tab, under storage section, add a new controller
3.

Actual results:
Unable to save
Failed to create a compute vmware (VMware) instance patti-jacobitz.domiain: InvalidController: The device '2' is referring to a nonexisting controller '1,001'.

Expected results:
Host should be created

Additional info:
PFA production log