fix cluster util.sh unbound variable
fix cluster util.sh unbound variable

chestack/kubernetes,deads2k/kubernetes,warmchang/kubernetes,dixudx/kubernetes,spzala/kubernetes,openshift/kubernetes,k82/kubernetes,Acidburn0zzz/kubernetes,carlory/kubernetes,cblecker/kubernetes,shyamjvs/kubernetes,mikebrow/kubernetes,cblecker/kubernetes,PI-Victor/kubernetes,enj/kubernetes,ingvagabund/kubernetes,dereknex/kubernetes,humblec/kubernetes,fabriziopandini/kubernetes,pires/kubernetes,soltysh/kubernetes,fanzhangio/kubernetes,dereknex/kubernetes,mosoft521/kubernetes,jackfrancis/kubernetes,saad-ali/kubernetes,tengqm/kubernetes,joelsmith/kubernetes,soltysh/kubernetes,mkumatag/kubernetes,xlgao-zju/kubernetes,zhouhaibing089/kubernetes,mengqiy/kubernetes,cofyc/kubernetes,rnaveiras/kubernetes,liggitt/kubernetes,zhangmingld/kubernetes,chrislovecnm/kubernetes,idvoretskyi/kubernetes,rnaveiras/kubernetes,aledbf/kubernetes,carlory/kubernetes,weiwei04/kubernetes,csrwng/kubernetes,dims/kubernetes,PI-Victor/kubernetes,matthyx/kubernetes,csrwng/kubernetes,hex108/kubernetes,linux-on-ibm-z/kubernetes,shyamjvs/kubernetes,dereknex/kubernetes,shyamjvs/kubernetes,ii/kubernetes,rafax/kubernetes,weiwei04/kubernetes,aledbf/kubernetes,verb/kubernetes,micahhausler/kubernetes,shyamjvs/kubernetes,xlgao-zju/kubernetes,hex108/kubernetes,monopole/kubernetes,ii/kubernetes,spzala/kubernetes,xlgao-zju/kubernetes,tengqm/kubernetes,mikedanese/kubernetes,kevin-wangzefeng/kubernetes,olivierlemasle/kubernetes,ingvagabund/kubernetes,rnaveiras/kubernetes,iameli/kubernetes,x13n/kubernetes,cblecker/kubernetes,dlorenc/kubernetes,gnufied/kubernetes,jsafrane/kubernetes,nak3/kubernetes,kevin-wangzefeng/kubernetes,spzala/kubernetes,ravilr/kubernetes,krmayankk/kubernetes,chestack/kubernetes,feiskyer/kubernetes,warmchang/kubernetes,dims/kubernetes,k82cn/kubernetes,fanzhangio/kubernetes,warmchang/kubernetes,gnufied/kubernetes,mkumatag/kubernetes,pires/kubernetes,dixudx/kubernetes,roberthbailey/kubernetes,andrewrynhard/kubernetes,tpepper/kubernetes,jingxu97/kubernetes,rrati/kubernetes,mahak/kubernetes,ravilr/kubernetes,nak3/kubernetes,liggitt/kubernetes,linux-on-ibm-z/kubernetes,csrwng/kubernetes,alejandroEsc/kubernetes,openshift/kubernetes,PI-Victor/kubernetes,BenTheElder/kubernetes,mikedanese/kubernetes,wongma7/kubernetes,carlory/kubernetes,iterion/kubernetes,olivierlemasle/kubernetes,soltysh/kubernetes,PiotrProkop/kubernetes,dereknex/kubernetes,verult/kubernetes,iterion/kubernetes,tpepper/kubernetes,zhangmingld/kubernetes,coolsvap/kubernetes,kubernetes/kubernetes,GulajavaMinistudio/kubernetes,cblecker/kubernetes,PiotrProkop/kubernetes,dims/kubernetes,chrislovecnm/kubernetes,kevin-wangzefeng/kubernetes,pires/kubernetes,k82cn/kubernetes,verult/kubernetes,verult/kubernetes,andrewrynhard/kubernetes,csrwng/kubernetes,monopole/kubernetes,jagosan/kubernetes,joelsmith/kubernetes,saad-ali/kubernetes,PI-Victor/kubernetes,ingvagabund/kubernetes,deads2k/kubernetes,Clarifai/kubernetes,linux-on-ibm-z/kubernetes,andrewrynhard/kubernetes,idvoretskyi/kubernetes,k82cn/kubernetes,matthyx/kubernetes,fanzhangio/kubernetes,mikedanese/kubernetes,kitt1987/kubernetes,deads2k/kubernetes,k82cn/kubernetes,fanzhangio/kubernetes,mosoft521/kubernetes,rafax/kubernetes,idvoretskyi/kubernetes,lojies/kubernetes,jagosan/kubernetes,ingvagabund/kubernetes,PiotrProkop/kubernetes,warmchang/kubernetes,warmchang/kubernetes,dims/kubernetes,kevin-wangzefeng/kubernetes,dlorenc/kubernetes,enj/kubernetes,nckturner/kubernetes,kitt1987/kubernetes,ping035627/kubernetes,spzala/kubernetes,hex108/kubernetes,fabriziopandini/kubernetes,jsafrane/kubernetes,feiskyer/kubernetes,krmayankk/kubernetes,mikedanese/kubernetes,soltysh/kubernetes,coolsvap/kubernetes,weiwei04/kubernetes,dlorenc/kubernetes,mfojtik/kubernetes,nak3/kubernetes,xychu/kubernetes,nak3/kubernetes,xlgao-zju/kubernetes,BenTheElder/kubernetes,thockin/kubernetes,iameli/kubernetes,jessfraz/kubernetes,fabriziopandini/kubernetes,dlorenc/kubernetes,mengqiy/kubernetes,mosoft521/kubernetes,ravilr/kubernetes,andrewrynhard/kubernetes,liggitt/kubernetes,kubernetes/kubernetes,bparees/kubernetes,matthyx/kubernetes,mengqiy/kubernetes,weiwei04/kubernetes,xlgao-zju/kubernetes,wongma7/kubernetes,liggitt/kubernetes,nak3/kubernetes,csrwng/kubernetes,mfojtik/kubernetes,ii/kubernetes,idvoretskyi/kubernetes,mosoft521/kubernetes,mfojtik/kubernetes,cofyc/kubernetes,jagosan/kubernetes,tengqm/kubernetes,thockin/kubernetes,weiwei04/kubernetes,enj/kubernetes,Acidburn0zzz/kubernetes,verult/kubernetes,krmayankk/kubernetes,kpgriffith/kubernetes,mahak/kubernetes,xychu/kubernetes,bparees/kubernetes,tengqm/kubernetes,xychu/kubernetes,krmayankk/kubernetes,alejandroEsc/kubernetes,mfojtik/kubernetes,jingxu97/kubernetes,bparees/kubernetes,aledbf/kubernetes,chestack/kubernetes,roberthbailey/kubernetes,saad-ali/kubernetes,jdef/kubernetes,jsafrane/kubernetes,aledbf/kubernetes,verb/kubernetes,feiskyer/kubernetes,saad-ali/kubernetes,jsafrane/kubernetes,ii/kubernetes,iameli/kubernetes,saad-ali/kubernetes,sdminonne/kubernetes,jdef/kubernetes,mikedanese/kubernetes,pires/kubernetes,feiskyer/kubernetes,kpgriffith/kubernetes,kitt1987/kubernetes,cofyc/kubernetes,cofyc/kubernetes,sdminonne/kubernetes,MikeSpreitzer/kubernetes,MikeSpreitzer/kubernetes,mikebrow/kubernetes,jessfraz/kubernetes,fabriziopandini/kubernetes,jessfraz/kubernetes,zhouhaibing089/kubernetes,joelsmith/kubernetes,rrati/kubernetes,kpgriffith/kubernetes,xlgao-zju/kubernetes,xychu/kubernetes,mengqiy/kubernetes,dixudx/kubernetes,nckturner/kubernetes,iterion/kubernetes,nikhita/kubernetes,Clarifai/kubernetes,GulajavaMinistudio/kubernetes,dlorenc/kubernetes,GulajavaMinistudio/kubernetes,jessfraz/kubernetes,openshift/kubernetes,bparees/kubernetes,PiotrProkop/kubernetes,monopole/kubernetes,kpgriffith/kubernetes,nak3/kubernetes,tengqm/kubernetes,joelsmith/kubernetes,zhouhaibing089/kubernetes,iterion/kubernetes,nckturner/kubernetes,fanzhangio/kubernetes,zhangmingld/kubernetes,micahhausler/kubernetes,kubernetes/kubernetes,ravilr/kubernetes,xychu/kubernetes,mikebrow/kubernetes,mkumatag/kubernetes,jdef/kubernetes,gnufied/kubernetes,thockin/kubernetes,openshift/kubernetes,Acidburn0zzz/kubernetes,lojies/kubernetes,pires/kubernetes,joelsmith/kubernetes,ping035627/kubernetes,idvoretskyi/kubernetes,matthyx/kubernetes,dereknex/kubernetes,tpepper/kubernetes,roberthbailey/kubernetes,micahhausler/kubernetes,zhangmingld/kubernetes,x13n/kubernetes,spzala/kubernetes,thockin/kubernetes,MikeSpreitzer/kubernetes,zhangmingld/kubernetes,ii/kubernetes,nikhita/kubernetes,jackfrancis/kubernetes,jingxu97/kubernetes,x13n/kubernetes,PiotrProkop/kubernetes,shyamjvs/kubernetes,jingxu97/kubernetes,sdminonne/kubernetes,tpepper/kubernetes,cofyc/kubernetes,bparees/kubernetes,roberthbailey/kubernetes,GulajavaMinistudio/kubernetes,dims/kubernetes,humblec/kubernetes,chestack/kubernetes,MikeSpreitzer/kubernetes,humblec/kubernetes,idvoretskyi/kubernetes,kubernetes/kubernetes,ravilr/kubernetes,verb/kubernetes,wongma7/kubernetes,tpepper/kubernetes,rafax/kubernetes,iterion/kubernetes,ingvagabund/kubernetes,coolsvap/kubernetes,jagosan/kubernetes,joelsmith/kubernetes,alejandroEsc/kubernetes,verb/kubernetes,li-ang/kubernetes,kitt1987/kubernetes,carlory/kubernetes,rnaveiras/kubernetes,rrati/kubernetes,krmayankk/kubernetes,BenTheElder/kubernetes,verult/kubernetes,lojies/kubernetes,li-ang/kubernetes,chrislovecnm/kubernetes,jackfrancis/kubernetes,olivierlemasle/kubernetes,saad-ali/kubernetes,chrislovecnm/kubernetes,alejandroEsc/kubernetes,kitt1987/kubernetes,olivierlemasle/kubernetes,andrewrynhard/kubernetes,micahhausler/kubernetes,wongma7/kubernetes,cblecker/kubernetes,sdminonne/kubernetes,jdef/kubernetes,openshift/kubernetes,weiwei04/kubernetes,hex108/kubernetes,dlorenc/kubernetes,mahak/kubernetes,dixudx/kubernetes,Clarifai/kubernetes,x13n/kubernetes,lojies/kubernetes,micahhausler/kubernetes,iterion/kubernetes,carlory/kubernetes,fanzhangio/kubernetes,k82/kubernetes,hex108/kubernetes,jagosan/kubernetes,olivierlemasle/kubernetes,rafax/kubernetes,PI-Victor/kubernetes,nikhita/kubernetes,linux-on-ibm-z/kubernetes,coolsvap/kubernetes,feiskyer/kubernetes,pires/kubernetes,k82/kubernetes,li-ang/kubernetes,BenTheElder/kubernetes,dixudx/kubernetes,zhangmingld/kubernetes,dereknex/kubernetes,mahak/kubernetes,k82/kubernetes,tpepper/kubernetes,Acidburn0zzz/kubernetes,matthyx/kubernetes,krmayankk/kubernetes,verult/kubernetes,mahak/kubernetes,fabriziopandini/kubernetes,kpgriffith/kubernetes,cofyc/kubernetes,nckturner/kubernetes,mfojtik/kubernetes,humblec/kubernetes,Acidburn0zzz/kubernetes,lojies/kubernetes,jdef/kubernetes,nckturner/kubernetes,mfojtik/kubernetes,rrati/kubernetes,liggitt/kubernetes,hex108/kubernetes,humblec/kubernetes,enj/kubernetes,PI-Victor/kubernetes,kpgriffith/kubernetes,chestack/kubernetes,k82/kubernetes,soltysh/kubernetes,zhouhaibing089/kubernetes,x13n/kubernetes,enj/kubernetes,monopole/kubernetes,zhouhaibing089/kubernetes,BenTheElder/kubernetes,monopole/kubernetes,jingxu97/kubernetes,mikebrow/kubernetes,iameli/kubernetes,linux-on-ibm-z/kubernetes,mkumatag/kubernetes,ping035627/kubernetes,jsafrane/kubernetes,gnufied/kubernetes,xychu/kubernetes,k82cn/kubernetes,ingvagabund/kubernetes,li-ang/kubernetes,andrewrynhard/kubernetes,wongma7/kubernetes,coolsvap/kubernetes,verb/kubernetes,deads2k/kubernetes,rrati/kubernetes,nikhita/kubernetes,thockin/kubernetes,roberthbailey/kubernetes,aledbf/kubernetes,ping035627/kubernetes,jdef/kubernetes,iameli/kubernetes,Clarifai/kubernetes,x13n/kubernetes,deads2k/kubernetes,Acidburn0zzz/kubernetes,ping035627/kubernetes,rnaveiras/kubernetes,mosoft521/kubernetes,nikhita/kubernetes,gnufied/kubernetes,mikebrow/kubernetes,GulajavaMinistudio/kubernetes,chrislovecnm/kubernetes,jessfraz/kubernetes,kubernetes/kubernetes,MikeSpreitzer/kubernetes,Clarifai/kubernetes,kitt1987/kubernetes,li-ang/kubernetes,mkumatag/kubernetes,chrislovecnm/kubernetes,kevin-wangzefeng/kubernetes,coolsvap/kubernetes,alejandroEsc/kubernetes,jackfrancis/kubernetes,sdminonne/kubernetes,Clarifai/kubernetes,jackfrancis/kubernetes,mengqiy/kubernetes