kojivmd: cleanup VMs with UNDEFINE_NVRAM
Newer virtual machines may use nvram, and libvirt needs a special flag
to clean these up. Prior to this change (with libvirt-8.0.0-8.1.el9_0):
File "/usr/sbin/kojivmd", line 1072, in cleanupVM
vm.undefine()
File "/usr/lib64/python3.9/site-packages/libvirt.py", line 3178, in undefine
raise libvirtError('virDomainUndefine() failed')
libvirt.libvirtError: Requested operation is not valid: cannot undefine
domain with nvram
RHEL 7 first introduced the libvirt.VIR_DOMAIN_UNDEFINE_NVRAM flag in
libvirt-python-1.2.8-7.el7 (rhbz#1144284)