Comment 13 for bug 1997352

based on https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainUndefineFlagsValues

when we are undefineinf a domain for any other reason then delete i think we should be passing

VIR_DOMAIN_UNDEFINE_KEEP_NVRAM and VIR_DOMAIN_UNDEFINE_KEEP_TPM

even in the rebuild case i belive this is correct

its only for nova delete that we should remove them