Mostly revert "python: remove virConnectGetCPUModelNames from globals"
Mostly revert "python: remove virConnectGetCPUModelNames from globals"

This reverts commit 6b90d7428d72e92db292a9228c44701bfd5003c9.

The original problem was that libvirt_virConnectGetCPUModelNames
was listed twice in the exports table, once automatically from
the generator and once from the manual override. We merely needed
to list it in the skip_impl list, and not delete the manually
written code entirely.

libvirt/libvirt-python,libvirt/libvirt-python,libvirt/libvirt-python