agnhost/netexec: logging cleanup and print more verbose errors
agnhost/netexec: logging cleanup and print more verbose errors

There's currently no way to know whether an error is for SCTP or
UDP, for example:

Jul 24 09:55:54.469: INFO: netserver-0[e2e-nettest-3476].container[webserver].log
2020/07/24 09:53:52 Started UDP server
2020/07/24 09:53:52 Error occurred. error:protocol not supported

In this case the "Error occurred. error:protocol not supported" is
actually for the SCTP socket. Make that more apparent.

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