builder/qemu: Fix typo in version comparison
builder/qemu: Fix typo in version comparison

mitchellh/packer,dave2/packer,mitchellh/packer,tas50/packer,paulmey/packer,pecigonzalo/packer,paulmey/packer,ricardclau/packer,timsutton/packer,pecigonzalo/packer,hashicorp/packer,tas50/packer,rnaveiras/packer,grubernaut/packer,bryson/packer,bryson/packer,dave2/packer,pecigonzalo/packer,ricardclau/packer,mitchellh/packer,dave2/packer,bryson/packer,rnaveiras/packer,ricardclau/packer,ricardclau/packer,grubernaut/packer,rnaveiras/packer,hashicorp/packer,mitchellh/packer,paulmey/packer,timsutton/packer,dave2/packer,pecigonzalo/packer,rnaveiras/packer,timsutton/packer,tas50/packer,ricardclau/packer,timsutton/packer,bryson/packer,tas50/packer,dave2/packer,hashicorp/packer,ricardclau/packer,grubernaut/packer,bryson/packer,paulmey/packer,bryson/packer,tas50/packer,hashicorp/packer,rnaveiras/packer,grubernaut/packer,timsutton/packer,paulmey/packer,dave2/packer,grubernaut/packer,grubernaut/packer,timsutton/packer,paulmey/packer,mitchellh/packer,rnaveiras/packer,tas50/packer