Added tests to check metrics labels
Added tests to check metrics labels

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