e2e pod logs: use hierarchical directory structure
e2e pod logs: use hierarchical directory structure

When using the entire test name as file name, the name became too
long (> 256 characters, which wasn't supported by all file systems)
and the artifact directory got cluttered.

The original reason (a limitation in Gubernator) no longer applies
because Spyglass is used now for log viewing.

xlgao-zju/kubernetes,du2016/kubernetes,soltysh/kubernetes,cofyc/kubernetes,mikedanese/kubernetes,xlgao-zju/kubernetes,hex108/kubernetes,jackfrancis/kubernetes,wongma7/kubernetes,roberthbailey/kubernetes,tcnghia/kubernetes,dlorenc/kubernetes,PI-Victor/kubernetes,jingxu97/kubernetes,olivierlemasle/kubernetes,andrewsykim/kubernetes,Clarifai/kubernetes,tpepper/kubernetes,csrwng/kubernetes,li-ang/kubernetes,dlorenc/kubernetes,kpgriffith/kubernetes,k82/kubernetes,humblec/kubernetes,tomzhang/kubernetes,kubernetes/kubernetes,PI-Victor/kubernetes,carlory/kubernetes,chestack/kubernetes,matthyx/kubernetes,mkumatag/kubernetes,jingxu97/kubernetes,li-ang/kubernetes,deads2k/kubernetes,dereknex/kubernetes,mkumatag/kubernetes,mikebrow/kubernetes,mikebrow/kubernetes,ii/kubernetes,gnufied/kubernetes,nak3/kubernetes,spzala/kubernetes,rafax/kubernetes,deads2k/kubernetes,joelsmith/kubernetes,ravisantoshgudimetla/kubernetes,spzala/kubernetes,x13n/kubernetes,feiskyer/kubernetes,cblecker/kubernetes,mosoft521/kubernetes,jessfraz/kubernetes,x13n/kubernetes,mahak/kubernetes,x13n/kubernetes,weiwei04/kubernetes,tomzhang/kubernetes,tengqm/kubernetes,xychu/kubernetes,dlorenc/kubernetes,bparees/kubernetes,dlorenc/kubernetes,kevin-wangzefeng/kubernetes,fanzhangio/kubernetes,ping035627/kubernetes,warmchang/kubernetes,dims/kubernetes,zhangmingld/kubernetes,micahhausler/kubernetes,wanghaoran1988/kubernetes,sanjeevm0/kubernetes,johscheuer/kubernetes,ping035627/kubernetes,kubernetes/kubernetes,PI-Victor/kubernetes,olivierlemasle/kubernetes,wongma7/kubernetes,MikeSpreitzer/kubernetes,lojies/kubernetes,csrwng/kubernetes,linux-on-ibm-z/kubernetes,alejandroEsc/kubernetes,wongma7/kubernetes,alejandroEsc/kubernetes,mfojtik/kubernetes,verult/kubernetes,aledbf/kubernetes,micahhausler/kubernetes,verb/kubernetes,verult/kubernetes,Lion-Wei/kubernetes,joelsmith/kubernetes,hex108/kubernetes,JacobTanenbaum/kubernetes,du2016/kubernetes,mfojtik/kubernetes,openshift/kubernetes,ravisantoshgudimetla/kubernetes,chrislovecnm/kubernetes,yarntime/kubernetes,sanjeevm0/kubernetes,dixudx/kubernetes,stevesloka/kubernetes,mahak/kubernetes,tcnghia/kubernetes,johscheuer/kubernetes,xlgao-zju/kubernetes,dereknex/kubernetes,dereknex/kubernetes,JacobTanenbaum/kubernetes,BenTheElder/kubernetes,k82cn/kubernetes,kpgriffith/kubernetes,chrislovecnm/kubernetes,feiskyer/kubernetes,cblecker/kubernetes,kevensen/kubernetes,saad-ali/kubernetes,mkumatag/kubernetes,brendandburns/kubernetes,du2016/kubernetes,alejandroEsc/kubernetes,chestack/kubernetes,mikebrow/kubernetes,spzala/kubernetes,Acidburn0zzz/kubernetes,kevensen/kubernetes,nak3/kubernetes,kpgriffith/kubernetes,dims/kubernetes,wanghaoran1988/kubernetes,roberthbailey/kubernetes,ravilr/kubernetes,micahhausler/kubernetes,Clarifai/kubernetes,PI-Victor/kubernetes,mYmNeo/kubernetes,mYmNeo/kubernetes,spzala/kubernetes,saad-ali/kubernetes,Acidburn0zzz/kubernetes,JacobTanenbaum/kubernetes,Lion-Wei/kubernetes,PI-Victor/kubernetes,andrewrynhard/kubernetes,lojies/kubernetes,weiwei04/kubernetes,dixudx/kubernetes,tpepper/kubernetes,linux-on-ibm-z/kubernetes,verb/kubernetes,PI-Victor/kubernetes,Lion-Wei/kubernetes,feiskyer/kubernetes,mosoft521/kubernetes,bparees/kubernetes,ravilr/kubernetes,openshift/kubernetes,matthyx/kubernetes,x13n/kubernetes,alejandroEsc/kubernetes,ping035627/kubernetes,stevesloka/kubernetes,stevesloka/kubernetes,du2016/kubernetes,liggitt/kubernetes,saad-ali/kubernetes,x13n/kubernetes,rrati/kubernetes,nak3/kubernetes,nak3/kubernetes,warmchang/kubernetes,chrislovecnm/kubernetes,iterion/kubernetes,coolsvap/kubernetes,erwinvaneyk/kubernetes,Clarifai/kubernetes,idvoretskyi/kubernetes,kubernetes/kubernetes,mengqiy/kubernetes,tpepper/kubernetes,k82cn/kubernetes,k82/kubernetes,yarntime/kubernetes,ingvagabund/kubernetes,warmchang/kubernetes,MHBauer/kubernetes,tengqm/kubernetes,tcnghia/kubernetes,sdminonne/kubernetes,k82cn/kubernetes,roberthbailey/kubernetes,mikedanese/kubernetes,nckturner/kubernetes,jdef/kubernetes,chrislovecnm/kubernetes,tcnghia/kubernetes,rrati/kubernetes,krmayankk/kubernetes,jagosan/kubernetes,xychu/kubernetes,tcnghia/kubernetes,coolsvap/kubernetes,jackfrancis/kubernetes,johscheuer/kubernetes,cblecker/kubernetes,JacobTanenbaum/kubernetes,Acidburn0zzz/kubernetes,jessfraz/kubernetes,pires/kubernetes,pires/kubernetes,xychu/kubernetes,cmluciano/kubernetes,weiwei04/kubernetes,shyamjvs/kubernetes,verb/kubernetes,cmluciano/kubernetes,kitt1987/kubernetes,fabriziopandini/kubernetes,verult/kubernetes,stevesloka/kubernetes,matthyx/kubernetes,erwinvaneyk/kubernetes,fabriziopandini/kubernetes,shyamjvs/kubernetes,jessfraz/kubernetes,cofyc/kubernetes,johscheuer/kubernetes,olivierlemasle/kubernetes,csrwng/kubernetes,idvoretskyi/kubernetes,jsafrane/kubernetes,matthyx/kubernetes,BenTheElder/kubernetes,andrewrynhard/kubernetes,cmluciano/kubernetes,humblec/kubernetes,tomzhang/kubernetes,olivierlemasle/kubernetes,joelsmith/kubernetes,yarntime/kubernetes,Lion-Wei/kubernetes,liggitt/kubernetes,iterion/kubernetes,wanghaoran1988/kubernetes,carlory/kubernetes,MikeSpreitzer/kubernetes,nikhita/kubernetes,nikhita/kubernetes,k82cn/kubernetes,dims/kubernetes,andrewsykim/kubernetes,zhangmingld/kubernetes,fanzhangio/kubernetes,rnaveiras/kubernetes,monopole/kubernetes,PiotrProkop/kubernetes,kevin-wangzefeng/kubernetes,sdminonne/kubernetes,thockin/kubernetes,saad-ali/kubernetes,fgimenez/kubernetes,mengqiy/kubernetes,verult/kubernetes,jsafrane/kubernetes,pires/kubernetes,kevensen/kubernetes,yarntime/kubernetes,kitt1987/kubernetes,MikeSpreitzer/kubernetes,li-ang/kubernetes,PiotrProkop/kubernetes,Acidburn0zzz/kubernetes,matthyx/kubernetes,jdef/kubernetes,gnufied/kubernetes,Clarifai/kubernetes,xychu/kubernetes,shyamjvs/kubernetes,cmluciano/kubernetes,fanzhangio/kubernetes,GulajavaMinistudio/kubernetes,dims/kubernetes,PiotrProkop/kubernetes,mYmNeo/kubernetes,hex108/kubernetes,kpgriffith/kubernetes,ingvagabund/kubernetes,fgimenez/kubernetes,iterion/kubernetes,jsafrane/kubernetes,alejandroEsc/kubernetes,Acidburn0zzz/kubernetes,nckturner/kubernetes,tpepper/kubernetes,linux-on-ibm-z/kubernetes,tomzhang/kubernetes,rnaveiras/kubernetes,sdminonne/kubernetes,warmchang/kubernetes,mkumatag/kubernetes,tallclair/kubernetes,zhangmingld/kubernetes,jagosan/kubernetes,mkumatag/kubernetes,ingvagabund/kubernetes,krmayankk/kubernetes,joelsmith/kubernetes,rrati/kubernetes,MHBauer/kubernetes,fgimenez/kubernetes,fgimenez/kubernetes,dereknex/kubernetes,chrislovecnm/kubernetes,monopole/kubernetes,dixudx/kubernetes,csrwng/kubernetes,enj/kubernetes,GulajavaMinistudio/kubernetes,tallclair/kubernetes,ii/kubernetes,rnaveiras/kubernetes,bparees/kubernetes,jessfraz/kubernetes,yujuhong/kubernetes,mengqiy/kubernetes,zhouhaibing089/kubernetes,zhouhaibing089/kubernetes,tomzhang/kubernetes,roberthbailey/kubernetes,sdminonne/kubernetes,nikhita/kubernetes,feiskyer/kubernetes,BenTheElder/kubernetes,MHBauer/kubernetes,kubernetes/kubernetes,wongma7/kubernetes,micahhausler/kubernetes,fgimenez/kubernetes,fabriziopandini/kubernetes,openshift/kubernetes,erwinvaneyk/kubernetes,tallclair/kubernetes,tallclair/kubernetes,krmayankk/kubernetes,k82/kubernetes,yujuhong/kubernetes,MHBauer/kubernetes,weiwei04/kubernetes,andrewrynhard/kubernetes,brendandburns/kubernetes,sanjeevm0/kubernetes,rnaveiras/kubernetes,fanzhangio/kubernetes,tomzhang/kubernetes,pires/kubernetes,erwinvaneyk/kubernetes,chestack/kubernetes,mfojtik/kubernetes,joelsmith/kubernetes,mahak/kubernetes,ingvagabund/kubernetes,dlorenc/kubernetes,humblec/kubernetes,mYmNeo/kubernetes,iameli/kubernetes,cofyc/kubernetes,MHBauer/kubernetes,spzala/kubernetes,csrwng/kubernetes,stevesloka/kubernetes,erwinvaneyk/kubernetes,pires/kubernetes,BenTheElder/kubernetes,tomzhang/kubernetes,Lion-Wei/kubernetes,olivierlemasle/kubernetes,xychu/kubernetes,zhouhaibing089/kubernetes,ping035627/kubernetes,JacobTanenbaum/kubernetes,jessfraz/kubernetes,chrislovecnm/kubernetes,saad-ali/kubernetes,jdef/kubernetes,luxas/kubernetes,deads2k/kubernetes,jackfrancis/kubernetes,brendandburns/kubernetes,linux-on-ibm-z/kubernetes,soltysh/kubernetes,tallclair/kubernetes,cblecker/kubernetes,verb/kubernetes,wongma7/kubernetes,Lion-Wei/kubernetes,mikebrow/kubernetes,ingvagabund/kubernetes,Clarifai/kubernetes,jackfrancis/kubernetes,gnufied/kubernetes,coolsvap/kubernetes,pires/kubernetes,nikhita/kubernetes,iterion/kubernetes,xlgao-zju/kubernetes,ii/kubernetes,krmayankk/kubernetes,linux-on-ibm-z/kubernetes,brendandburns/kubernetes,thockin/kubernetes,saad-ali/kubernetes,lojies/kubernetes,rrati/kubernetes,MikeSpreitzer/kubernetes,dixudx/kubernetes,weiwei04/kubernetes,wanghaoran1988/kubernetes,feiskyer/kubernetes,andrewrynhard/kubernetes,shyamjvs/kubernetes,jdef/kubernetes,k82/kubernetes,du2016/kubernetes,liggitt/kubernetes,erwinvaneyk/kubernetes,openshift/kubernetes,iameli/kubernetes,dereknex/kubernetes,monopole/kubernetes,fanzhangio/kubernetes,andrewrynhard/kubernetes,mengqiy/kubernetes,warmchang/kubernetes,rafax/kubernetes,andrewrynhard/kubernetes,stevesloka/kubernetes,ravisantoshgudimetla/kubernetes,tpepper/kubernetes,openshift/kubernetes,carlory/kubernetes,dims/kubernetes,ravilr/kubernetes,sdminonne/kubernetes,hex108/kubernetes,lojies/kubernetes,ii/kubernetes,yujuhong/kubernetes,kevensen/kubernetes,tallclair/kubernetes,xychu/kubernetes,tpepper/kubernetes,wanghaoran1988/kubernetes,andrewsykim/kubernetes,nckturner/kubernetes,cofyc/kubernetes,fabriziopandini/kubernetes,enj/kubernetes,k82/kubernetes,dereknex/kubernetes,Acidburn0zzz/kubernetes,joelsmith/kubernetes,andrewsykim/kubernetes,thockin/kubernetes,enj/kubernetes,mosoft521/kubernetes,thockin/kubernetes,ii/kubernetes,cblecker/kubernetes,bparees/kubernetes,mikedanese/kubernetes,GulajavaMinistudio/kubernetes,monopole/kubernetes,jsafrane/kubernetes,kitt1987/kubernetes,xlgao-zju/kubernetes,MikeSpreitzer/kubernetes,iameli/kubernetes,lojies/kubernetes,mYmNeo/kubernetes,kevin-wangzefeng/kubernetes,coolsvap/kubernetes,deads2k/kubernetes,ingvagabund/kubernetes,kubernetes/kubernetes,hex108/kubernetes,ravilr/kubernetes,mfojtik/kubernetes,PiotrProkop/kubernetes,rafax/kubernetes,soltysh/kubernetes,kevin-wangzefeng/kubernetes,rrati/kubernetes,idvoretskyi/kubernetes,verb/kubernetes,kpgriffith/kubernetes,cmluciano/kubernetes,dlorenc/kubernetes,luxas/kubernetes,jdef/kubernetes,tengqm/kubernetes,humblec/kubernetes,k82cn/kubernetes,aledbf/kubernetes,ravisantoshgudimetla/kubernetes,iterion/kubernetes,johscheuer/kubernetes,rnaveiras/kubernetes,xlgao-zju/kubernetes,wanghaoran1988/kubernetes,mikebrow/kubernetes,gnufied/kubernetes,thockin/kubernetes,jsafrane/kubernetes,micahhausler/kubernetes,aledbf/kubernetes,MHBauer/kubernetes,iameli/kubernetes,sanjeevm0/kubernetes,mosoft521/kubernetes,jackfrancis/kubernetes,kevensen/kubernetes,jingxu97/kubernetes,aledbf/kubernetes,tcnghia/kubernetes,hex108/kubernetes,yujuhong/kubernetes,tomzhang/kubernetes,x13n/kubernetes,mfojtik/kubernetes,coolsvap/kubernetes,mikedanese/kubernetes,roberthbailey/kubernetes,Clarifai/kubernetes,li-ang/kubernetes,mengqiy/kubernetes,rafax/kubernetes,kevin-wangzefeng/kubernetes,sanjeevm0/kubernetes,brendandburns/kubernetes,PiotrProkop/kubernetes,fgimenez/kubernetes,kitt1987/kubernetes,jdef/kubernetes,enj/kubernetes,iameli/kubernetes,gnufied/kubernetes,sanjeevm0/kubernetes,yarntime/kubernetes,chestack/kubernetes,yujuhong/kubernetes,luxas/kubernetes,tengqm/kubernetes,carlory/kubernetes,carlory/kubernetes,BenTheElder/kubernetes,kpgriffith/kubernetes,soltysh/kubernetes,weiwei04/kubernetes,shyamjvs/kubernetes,krmayankk/kubernetes,ravisantoshgudimetla/kubernetes,jagosan/kubernetes,deads2k/kubernetes,zhangmingld/kubernetes,luxas/kubernetes,jagosan/kubernetes,liggitt/kubernetes,li-ang/kubernetes,brendandburns/kubernetes,fanzhangio/kubernetes,johscheuer/kubernetes,JacobTanenbaum/kubernetes,nckturner/kubernetes,humblec/kubernetes,ravilr/kubernetes,verult/kubernetes,mosoft521/kubernetes,krmayankk/kubernetes,jingxu97/kubernetes,monopole/kubernetes,tengqm/kubernetes,liggitt/kubernetes,nak3/kubernetes,dixudx/kubernetes,GulajavaMinistudio/kubernetes,jagosan/kubernetes,luxas/kubernetes,aledbf/kubernetes,nikhita/kubernetes,enj/kubernetes,mYmNeo/kubernetes,jingxu97/kubernetes,mahak/kubernetes,luxas/kubernetes,nak3/kubernetes,mikedanese/kubernetes,andrewsykim/kubernetes,ravisantoshgudimetla/kubernetes,andrewsykim/kubernetes,chestack/kubernetes,yujuhong/kubernetes,tomzhang/kubernetes,ping035627/kubernetes,zhouhaibing089/kubernetes,zhouhaibing089/kubernetes,idvoretskyi/kubernetes,kitt1987/kubernetes,soltysh/kubernetes,idvoretskyi/kubernetes,nckturner/kubernetes,idvoretskyi/kubernetes,cofyc/kubernetes,cofyc/kubernetes,fabriziopandini/kubernetes,yarntime/kubernetes,kitt1987/kubernetes,GulajavaMinistudio/kubernetes,mahak/kubernetes,verult/kubernetes,bparees/kubernetes,cmluciano/kubernetes,iterion/kubernetes,zhangmingld/kubernetes,mfojtik/kubernetes,zhangmingld/kubernetes,coolsvap/kubernetes