e2e metrics: check whether debug handlers are available
e2e metrics: check whether debug handlers are available

This can be checked by trying to retrieve log output. As in the case
of no pod found, a warning gets emitted when log retrieval fails and
metrics grabbing gets disabled.

Logging is checked instead of actual metrics retrieval because the
latter is more complex and thus more likely to fail for other reasons.

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