add e2e test for services with hostNetwork endpoints
add e2e test for services with hostNetwork endpoints

we are missing tests that check the connectivity against services
that have backend pods with hostNetwork: true.

Because the tests run in parallel, it is possible that the pods used as
backends try to bind to the same port, and since all of them use the
host network, the scheduler will fail to create them due to port conflicts,
so we run them serially.

We have to skip networking tests with udp and endpoints using
hostNetwork, because they have a known issue.

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