Make setDefaultCPUModel to set CPU model unconditionally
Make setDefaultCPUModel to set CPU model unconditionally

Seems like this code was copy-pasted from vmi-mutator.go
but all of the checks aren't needed to be performed twice
and CPU model needs to be set unconditionally.

Signed-off-by: Itamar Holder <b6ebf050aad0538d1e30c557853a5c8924b66230@redhat.com>

kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt