Draft: fix(proxmox): kvm-enable-nested fails on AMD

I built an AMD machine to work with until server hardware arrives.

Hit an error:

Starting command ./kvm-enable-nested-kvm-enable-nested
Command running
Detected processor type 'authenticamd
qemu'...
Injecting modules configuration for KVM nested mode...
Attempting to reload modules ... this WILL FAIL if there are running VMs...
modprobe: ERROR: could not insert 'kvm_amd': Invalid argument
Command exited with status 1
Action kvm-enable-nested finished
Task kvm-enable-nested failed
Marked machine goliath.butterhead.net as not runnable
Updated job for universal-proxmox:kvm-enable-nested:kvm-enable-nested to failed
Task signalled that it failed

I don't need to add the module option to have nested virtualization working, but it cause a problem when loading the module.