e2e_node: Update GPU tests to reflect reality
e2e_node: Update GPU tests to reflect reality

In older versions of Kubernetes (at least pre-0.19, it's the earliest
this test will run unmodified on), Pods that depended on devices could be
restarted after the device plugin had been removed. Currently however,
this isn't possible, as during ContainerManager.GetResources(), we
attempt to DeviceManager.GetDeviceRunContainerOptions() which fails as
there's no cached endpoint information for the plugin type.

This commit therefore breaks apart the existing test into two:
- One active test that validates that assignments are maintained across
  restarts
- One skipped test that validates the behaviour after GPUs have been
  removed, in case we decide that this is a bug that should be fixed in
  the future.

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