Fix `kubeadm upgrade plan` issue with FQDN nodes names
Fix `kubeadm upgrade plan` issue with FQDN nodes names

the fix introduced in #110634 also introduces a bug preventing `kubeadm
upgrade plan` from running on nodes having a different `os.Hostname()`
than node name. concretely, for a node `titi.company.ch`,
`os.Hostname()` will return `titi`, while the full node name is actually
`titi.company.ch`. this simple fix uses the `cfg.NodeRegistration.Name`
instead, which fixes the issue on my nodes with a FQDN node name

Keep previous hostname retrieval as fallback for dupURL CRI fix

ii/kubernetes,ping035627/kubernetes,ravilr/kubernetes,matthyx/kubernetes,ravilr/kubernetes,deads2k/kubernetes,kevin-wangzefeng/kubernetes,chestack/kubernetes,dixudx/kubernetes,zhouhaibing089/kubernetes,deads2k/kubernetes,iameli/kubernetes,li-ang/kubernetes,thockin/kubernetes,iameli/kubernetes,zhangmingld/kubernetes,lojies/kubernetes,kubernetes/kubernetes,dixudx/kubernetes,jsafrane/kubernetes,kubernetes/kubernetes,tengqm/kubernetes,tengqm/kubernetes,liggitt/kubernetes,jackfrancis/kubernetes,MikeSpreitzer/kubernetes,PiotrProkop/kubernetes,jsafrane/kubernetes,k82cn/kubernetes,jessfraz/kubernetes,jsafrane/kubernetes,mahak/kubernetes,MikeSpreitzer/kubernetes,tengqm/kubernetes,kubernetes/kubernetes,openshift/kubernetes,olivierlemasle/kubernetes,thockin/kubernetes,soltysh/kubernetes,zhangmingld/kubernetes,jessfraz/kubernetes,dims/kubernetes,mkumatag/kubernetes,jackfrancis/kubernetes,ii/kubernetes,liggitt/kubernetes,ii/kubernetes,k82cn/kubernetes,thockin/kubernetes,csrwng/kubernetes,olivierlemasle/kubernetes,liggitt/kubernetes,feiskyer/kubernetes,carlory/kubernetes,mahak/kubernetes,PiotrProkop/kubernetes,chestack/kubernetes,jsafrane/kubernetes,bparees/kubernetes,olivierlemasle/kubernetes,soltysh/kubernetes,matthyx/kubernetes,tengqm/kubernetes,ping035627/kubernetes,cblecker/kubernetes,openshift/kubernetes,mahak/kubernetes,enj/kubernetes,dims/kubernetes,csrwng/kubernetes,openshift/kubernetes,jessfraz/kubernetes,kevin-wangzefeng/kubernetes,li-ang/kubernetes,tengqm/kubernetes,gnufied/kubernetes,liggitt/kubernetes,enj/kubernetes,soltysh/kubernetes,iameli/kubernetes,PiotrProkop/kubernetes,MikeSpreitzer/kubernetes,dims/kubernetes,mahak/kubernetes,carlory/kubernetes,shyamjvs/kubernetes,BenTheElder/kubernetes,mkumatag/kubernetes,jessfraz/kubernetes,matthyx/kubernetes,enj/kubernetes,mengqiy/kubernetes,mkumatag/kubernetes,GulajavaMinistudio/kubernetes,gnufied/kubernetes,mengqiy/kubernetes,zhangmingld/kubernetes,dixudx/kubernetes,zhouhaibing089/kubernetes,carlory/kubernetes,matthyx/kubernetes,csrwng/kubernetes,warmchang/kubernetes,li-ang/kubernetes,MikeSpreitzer/kubernetes,dims/kubernetes,dixudx/kubernetes,GulajavaMinistudio/kubernetes,lojies/kubernetes,PiotrProkop/kubernetes,zhouhaibing089/kubernetes,mosoft521/kubernetes,mengqiy/kubernetes,feiskyer/kubernetes,feiskyer/kubernetes,mosoft521/kubernetes,kubernetes/kubernetes,cblecker/kubernetes,gnufied/kubernetes,kubernetes/kubernetes,zhangmingld/kubernetes,deads2k/kubernetes,openshift/kubernetes,BenTheElder/kubernetes,ravilr/kubernetes,feiskyer/kubernetes,enj/kubernetes,bparees/kubernetes,mkumatag/kubernetes,k82cn/kubernetes,cblecker/kubernetes,ii/kubernetes,dims/kubernetes,mkumatag/kubernetes,shyamjvs/kubernetes,BenTheElder/kubernetes,shyamjvs/kubernetes,zhouhaibing089/kubernetes,cblecker/kubernetes,gnufied/kubernetes,chestack/kubernetes,soltysh/kubernetes,PiotrProkop/kubernetes,mosoft521/kubernetes,warmchang/kubernetes,mosoft521/kubernetes,zhouhaibing089/kubernetes,dixudx/kubernetes,bparees/kubernetes,deads2k/kubernetes,GulajavaMinistudio/kubernetes,liggitt/kubernetes,olivierlemasle/kubernetes,mosoft521/kubernetes,iameli/kubernetes,thockin/kubernetes,mengqiy/kubernetes,k82cn/kubernetes,shyamjvs/kubernetes,lojies/kubernetes,jessfraz/kubernetes,lojies/kubernetes,gnufied/kubernetes,zhangmingld/kubernetes,warmchang/kubernetes,jsafrane/kubernetes,zhangmingld/kubernetes,openshift/kubernetes,bparees/kubernetes,thockin/kubernetes,kevin-wangzefeng/kubernetes,mahak/kubernetes,deads2k/kubernetes,jackfrancis/kubernetes,warmchang/kubernetes,GulajavaMinistudio/kubernetes,shyamjvs/kubernetes,li-ang/kubernetes,ravilr/kubernetes,k82cn/kubernetes,ravilr/kubernetes,matthyx/kubernetes,jackfrancis/kubernetes,BenTheElder/kubernetes,ping035627/kubernetes,BenTheElder/kubernetes,ii/kubernetes,li-ang/kubernetes,bparees/kubernetes,MikeSpreitzer/kubernetes,csrwng/kubernetes,olivierlemasle/kubernetes,ping035627/kubernetes,chestack/kubernetes,jackfrancis/kubernetes,iameli/kubernetes,carlory/kubernetes,enj/kubernetes,chestack/kubernetes,soltysh/kubernetes,ping035627/kubernetes,feiskyer/kubernetes,lojies/kubernetes,carlory/kubernetes,csrwng/kubernetes,kevin-wangzefeng/kubernetes,cblecker/kubernetes,kevin-wangzefeng/kubernetes,warmchang/kubernetes,mengqiy/kubernetes,GulajavaMinistudio/kubernetes