Fix bug in golint script when no files
Fix bug in golint script when no files

The script would get a 1 return code from grep when there are no files
in a directory, after filtering generated filenames.  This would cause
the script to exit unexpectedly.

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