Added a buffer period in the node performance tests
Added a buffer period in the node performance tests

The node-kubelet-flaky e2e job that runs the the
`Node Performance Testing [Serial] [Slow] [Flaky]` e2e tests have been
flaking because of inconsistencies on the cpu manager checkpoint file.
This seems to be caused because the checkpoint file is deleted (which is
what needs to happen in order to change the CPU manager policy which is
used for these e2e tests) right after the e2e tests asserts that a pod
does not exist anymore.
However, after a pod is deleted, the CPU manager may still be cleaning
up the resources used by the pod which may result in the checkpoint file
being created.
Whenever this happened, the kubelet would panic if we then try to
subsequently change the CPU manager policy to "static" from "none" or
vice versa (this is done 4 times in these tests).

Signed-off-by: alejandrox1 <c7965c724a8a77e132838ee9ce2ebaa795dbedda@gmail.com>

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