Ask the wiki repo, not Gollum, if it's empty
Ask the wiki repo, not Gollum, if it's empty

We need to skip empty repositories when creating a backup. Before this
change, we were asking gollum-lib if the wiki contains any _pages_. Now
we ask gitlab_git if the repository contains _files_. This should
resolve gollum_lib Grit timeouts in the backup script.

larryli/gitlabhq,bbodenmiller/gitlabhq,michaKFromParis/gitlabhqold,openwide-java/gitlabhq,julianengel/gitlabhq,dwrensha/gitlabhq,OtkurBiz/gitlabhq,since2014/gitlabhq,dukex/gitlabhq,lvfeng1130/gitlabhq,zBMNForks/gitlabhq,bbodenmiller/gitlabhq,salipro4ever/gitlabhq,flashbuckets/gitlabhq,8thcolor/testing-public-gitlabhq,ayufan/gitlabhq,pulkit21/gitlabhq,salipro4ever/gitlabhq,yatish27/gitlabhq,cui-liqiang/gitlab-ce,pjknkda/gitlabhq,cui-liqiang/gitlab-ce,allistera/gitlabhq,Datacom/gitlabhq,DanielZhangQingLong/gitlabhq,mr-dxdy/gitlabhq,stanhu/gitlabhq,louahola/gitlabhq,zBMNForks/gitlabhq,fscherwi/gitlabhq,flashbuckets/gitlabhq,yatish27/gitlabhq,LUMC/gitlabhq,k4zzk/gitlabhq,NARKOZ/gitlabhq,cinderblock/gitlabhq,Burick/gitlabhq,kitech/gitlabhq,Soullivaneuh/gitlabhq,Devin001/gitlabhq,since2014/gitlabhq,MauriceMohlek/gitlabhq,sonalkr132/gitlabhq,ikappas/gitlabhq,WSDC-NITWarangal/gitlabhq,tempbottle/gitlabhq,zrbsprite/gitlabhq,fpgentil/gitlabhq,szechyjs/gitlabhq,darkrasid/gitlabhq,stanhu/gitlabhq,H3Chief/gitlabhq,ferdinandrosario/gitlabhq,cncodog/gitlab,jvanbaarsen/gitlabhq,atomaka/gitlabhq,szechyjs/gitlabhq,hzy001/gitlabhq,yonglehou/gitlabhq,tempbottle/gitlabhq,phinfonet/mobbr-gitlabhq,shinexiao/gitlabhq,jirutka/gitlabhq,delkyd/gitlabhq,eliasp/gitlabhq,Exeia/gitlabhq,fendoudeqingchunhh/gitlabhq,Kambda/Mobbr,michaKFromParis/sparkslab,luzhongyang/gitlabhq,stoplightio/gitlabhq,joalmeid/gitlabhq,whluwit/gitlabhq,t-zuehlsdorff/gitlabhq,cinderblock/gitlabhq,MauriceMohlek/gitlabhq,revaret/gitlabhq,darkrasid/gitlabhq,revaret/gitlabhq,mmkassem/gitlabhq,vjustov/gitlabhq,screenpages/gitlabhq,yuyue2013/ss,gopeter/gitlabhq,manfer/gitlabhq,louahola/gitlabhq,H3Chief/gitlabhq,rumpelsepp/gitlabhq,hacsoc/gitlabhq,daiyu/gitlab-zh,jrjang/gitlabhq,123Haynes/gitlabhq,bozaro/gitlabhq,johnmyqin/gitlabhq,bozaro/gitlabhq,iiet/iiet-git,ibiart/gitlabhq,szechyjs/gitlabhq,michaKFromParis/gitlabhq,sekcheong/gitlabhq,SVArago/gitlabhq,Devin001/gitlabhq,allysonbarros/gitlabhq,tim-hoff/gitlabhq,theonlydoo/gitlabhq,jaepyoung/gitlabhq,ksoichiro/gitlabhq,koreamic/gitlabhq,joalmeid/gitlabhq,Kambda/mobbr-gitlabhq,fantasywind/gitlabhq,rumpelsepp/gitlabhq,jrjang/gitlab-ce,sakishum/gitlabhq,Burick/gitlabhq,allistera/gitlabhq,initiummedia/gitlabhq,koreamic/gitlabhq,pjknkda/gitlabhq,123Haynes/gitlabhq,per-garden/gitlabhq,lvfeng1130/gitlabhq,ksoichiro/gitlabhq,nguyen-tien-mulodo/gitlabhq,SkyWei/gitlabhq,larryli/gitlabhq,dukex/gitlabhq,yatish27/gitlabhq,sonalkr132/gitlabhq,phinfonet/mobbr-gitlabhq,fpgentil/gitlabhq,SkyWei/gitlabhq,chadyred/gitlabhq,zBMNForks/gitlabhq,delkyd/gitlabhq,revaret/gitlabhq,rebecamendez/gitlabhq,whluwit/gitlabhq,pulkit21/gitlabhq,rumpelsepp/gitlabhq,TheWatcher/gitlabhq,eliasp/gitlabhq,dvrylc/gitlabhq,Devin001/gitlabhq,bigsurge/gitlabhq,whluwit/gitlabhq,julianengel/gitlabhq,icedwater/gitlabhq,nguyen-tien-mulodo/gitlabhq,ngpestelos/gitlabhq,NKMR6194/gitlabhq,ngpestelos/gitlabhq,julianengel/gitlabhq,OlegGirko/gitlab-ce,fpgentil/gitlabhq,fendoudeqingchunhh/gitlabhq,pulkit21/gitlabhq,zrbsprite/gitlabhq,Razer6/gitlabhq,manfer/gitlabhq,duduribeiro/gitlabhq,mente/gitlabhq,Soullivaneuh/gitlabhq,dvrylc/gitlabhq,LytayTOUCH/gitlabhq,martijnvermaat/gitlabhq,vjustov/gitlabhq,gorgee/gitlabhq,OlegGirko/gitlab-ce,Razer6/gitlabhq,yulchitaj/TEST3,fscherwi/gitlabhq,duduribeiro/gitlabhq,Razer6/gitlabhq,ayufan/gitlabhq,icedwater/gitlabhq,yulchitaj/TEST3,michaKFromParis/gitlabhq,per-garden/gitlabhq,sonalkr132/gitlabhq,yuyue2013/ss,phinfonet/mobbr-gitlabhq,allysonbarros/gitlabhq,yama07/gitlabhq,Kambda/Mobbr,MauriceMohlek/gitlabhq,ikappas/gitlabhq,adaiguoguo/gitlab_globalserarch,flashbuckets/gitlabhq,dreampet/gitlab,folpindo/gitlabhq,t-zuehlsdorff/gitlabhq,jirutka/gitlabhq,ksoichiro/gitlabhq,stanhu/gitlabhq,childbamboo/gitlabhq,initiummedia/gitlabhq,LUMC/gitlabhq,fendoudeqingchunhh/gitlabhq,sonalkr132/gitlabhq,mathstuf/gitlabhq,jaepyoung/gitlabhq,tempbottle/gitlabhq,DanielZhangQingLong/gitlabhq,youprofit/gitlabhq,rhels/gitlabhq,larryli/gitlabhq,Burick/gitlabhq,xuvw/gitlabhq,xuvw/gitlabhq,rebecamendez/gitlabhq,H3Chief/gitlabhq,yatish27/gitlabhq,cncodog/gitlab,hzy001/gitlabhq,fgbreel/gitlabhq,joalmeid/gitlabhq,bbodenmiller/gitlabhq,ikappas/gitlabhq,rhels/gitlabhq,mavimo/gitlabhq,MauriceMohlek/gitlabhq,Kambda/Mobbr,jvanbaarsen/gitlabhq,michaKFromParis/sparkslab,rhels/gitlabhq,mr-dxdy/gitlabhq,hq804116393/gitlabhq,tk23/gitlabhq,michaKFromParis/sparkslab,yonglehou/gitlabhq,duduribeiro/gitlabhq,yfaizal/gitlabhq,nguyen-tien-mulodo/gitlabhq,pjknkda/gitlabhq,sue445/gitlabhq,it33/gitlabhq,mrb/gitlabhq,axilleas/gitlabhq,gorgee/gitlabhq,daiyu/gitlab-zh,folpindo/gitlabhq,ordiychen/gitlabhq,dreampet/gitlab,kitech/gitlabhq,TheWatcher/gitlabhq,luzhongyang/gitlabhq,copystudy/gitlabhq,cui-liqiang/gitlab-ce,openwide-java/gitlabhq,Tyrael/gitlabhq,hzy001/gitlabhq,allysonbarros/gitlabhq,cncodog/gitlab,sekcheong/gitlabhq,gopeter/gitlabhq,Telekom-PD/gitlabhq,chadyred/gitlabhq,ngpestelos/gitlabhq,kitech/gitlabhq,nmav/gitlabhq,mmkassem/gitlabhq,k4zzk/gitlabhq,Exeia/gitlabhq,Kambda/mobbr-gitlabhq,williamherry/gitlabhq,yonglehou/gitlabhq,WSDC-NITWarangal/gitlabhq,shinexiao/gitlabhq,cncodog/gitlab,chadyred/gitlabhq,gorgee/gitlabhq,jrjang/gitlab-ce,hacsoc/gitlabhq,salipro4ever/gitlabhq,axilleas/gitlabhq,fpgentil/gitlabhq,WSDC-NITWarangal/gitlabhq,yama07/gitlabhq,sue445/gitlabhq,it33/gitlabhq,stoplightio/gitlabhq,windymid/test2,folpindo/gitlabhq,k4zzk/gitlabhq,Datacom/gitlabhq,ttasanen/gitlabhq,H3Chief/gitlabhq,dplarson/gitlabhq,liyakun/gitlabhq,it33/gitlabhq,wangcan2014/gitlabhq,ayufan/gitlabhq,Soullivaneuh/gitlabhq,chadyred/gitlabhq,nmav/gitlabhq,fantasywind/gitlabhq,since2014/gitlabhq,allysonbarros/gitlabhq,stellamiranda/mobbr-gitlabhq,jrjang/gitlabhq,stoplightio/gitlabhq,michaKFromParis/sparkslab,TheWatcher/gitlabhq,per-garden/gitlabhq,luzhongyang/gitlabhq,chenrui2014/gitlabhq,flashbuckets/gitlabhq,hzy001/gitlabhq,theodi/gitlabhq,atomaka/gitlabhq,childbamboo/gitlabhq,liyakun/gitlabhq,theodi/gitlabhq,rhels/gitlabhq,bozaro/gitlabhq,folpindo/gitlabhq,iiet/iiet-git,yuyue2013/ss,martijnvermaat/gitlabhq,ZeoAlliance/gitlabhq,NKMR6194/gitlabhq,NKMR6194/gitlabhq,dwrensha/gitlabhq,theonlydoo/gitlabhq,iiet/iiet-git,jrjang/gitlab-ce,hacsoc/gitlabhq,childbamboo/gitlabhq,ordiychen/gitlabhq,zrbsprite/gitlabhq,stellamiranda/mobbr-gitlabhq,t-zuehlsdorff/gitlabhq,yfaizal/gitlabhq,ttasanen/gitlabhq,fantasywind/gitlabhq,Kambda/mobbr-gitlabhq,mathstuf/gitlabhq,adaiguoguo/gitlab_globalserarch,gopeter/gitlabhq,mavimo/gitlabhq,DanielZhangQingLong/gitlabhq,mmkassem/gitlabhq,fearenales/gitlabhq,screenpages/gitlabhq,screenpages/gitlabhq,wangcan2014/gitlabhq,williamherry/gitlabhq,dvrylc/gitlabhq,k4zzk/gitlabhq,ttasanen/gitlabhq,salipro4ever/gitlabhq,koreamic/gitlabhq,sakishum/gitlabhq,Exeia/gitlabhq,SVArago/gitlabhq,ZeoAlliance/gitlabhq,fantasywind/gitlabhq,SkyWei/gitlabhq,8thcolor/testing-public-gitlabhq,dwrensha/gitlabhq,fgbreel/gitlabhq,johnmyqin/gitlabhq,123Haynes/gitlabhq,manfer/gitlabhq,kitech/gitlabhq,sakishum/gitlabhq,johnmyqin/gitlabhq,copystudy/gitlabhq,yonglehou/gitlabhq,Tyrael/gitlabhq,htve/GitlabForChinese,SkyWei/gitlabhq,aaronsnyder/gitlabhq,pulkit21/gitlabhq,delkyd/gitlabhq,julianengel/gitlabhq,louahola/gitlabhq,eliasp/gitlabhq,ayufan/gitlabhq,cui-liqiang/gitlab-ce,hq804116393/gitlabhq,tk23/gitlabhq,fscherwi/gitlabhq,whluwit/gitlabhq,allistera/gitlabhq,pjknkda/gitlabhq,delkyd/gitlabhq,rebecamendez/gitlabhq,manfer/gitlabhq,bigsurge/gitlabhq,since2014/gitlabhq,initiummedia/gitlabhq,eliasp/gitlabhq,vjustov/gitlabhq,bigsurge/gitlabhq,daiyu/gitlab-zh,kemenaran/gitlabhq,duduribeiro/gitlabhq,jrjang/gitlabhq,OlegGirko/gitlab-ce,martinma4/gitlabhq,hq804116393/gitlabhq,shinexiao/gitlabhq,chenrui2014/gitlabhq,copystudy/gitlabhq,Telekom-PD/gitlabhq,luzhongyang/gitlabhq,icedwater/gitlabhq,liyakun/gitlabhq,WSDC-NITWarangal/gitlabhq,ibiart/gitlabhq,ferdinandrosario/gitlabhq,sideci-sample/sideci-sample-gitlabhq,openwide-java/gitlabhq,dplarson/gitlabhq,ibiart/gitlabhq,adaiguoguo/gitlab_globalserarch,martinma4/gitlabhq,stanhu/gitlabhq,OtkurBiz/gitlabhq,joalmeid/gitlabhq,yulchitaj/TEST3,icedwater/gitlabhq,mr-dxdy/gitlabhq,NARKOZ/gitlabhq,yuyue2013/ss,wangcan2014/gitlabhq,ordiychen/gitlabhq,atomaka/gitlabhq,SVArago/gitlabhq,dplarson/gitlabhq,sue445/gitlabhq,kemenaran/gitlabhq,LytayTOUCH/gitlabhq,mente/gitlabhq,tk23/gitlabhq,dukex/gitlabhq,zBMNForks/gitlabhq,michaKFromParis/gitlabhq,it33/gitlabhq,zrbsprite/gitlabhq,jrjang/gitlab-ce,DanielZhangQingLong/gitlabhq,htve/GitlabForChinese,williamherry/gitlabhq,hq804116393/gitlabhq,kemenaran/gitlabhq,Soullivaneuh/gitlabhq,tim-hoff/gitlabhq,mrb/gitlabhq,adaiguoguo/gitlab_globalserarch,SVArago/gitlabhq,lvfeng1130/gitlabhq,sue445/gitlabhq,theonlydoo/gitlabhq,Devin001/gitlabhq,NuLL3rr0r/gitlabhq,youprofit/gitlabhq,sakishum/gitlabhq,Razer6/gitlabhq,TheWatcher/gitlabhq,mente/gitlabhq,Datacom/gitlabhq,mr-dxdy/gitlabhq,nmav/gitlabhq,yfaizal/gitlabhq,bozaro/gitlabhq,ordiychen/gitlabhq,sideci-sample/sideci-sample-gitlabhq,8thcolor/testing-public-gitlabhq,gorgee/gitlabhq,fearenales/gitlabhq,htve/GitlabForChinese,mavimo/gitlabhq,dplarson/gitlabhq,michaKFromParis/gitlabhqold,yama07/gitlabhq,michaKFromParis/gitlabhqold,mrb/gitlabhq,michaKFromParis/gitlabhqold,mathstuf/gitlabhq,ksoichiro/gitlabhq,fearenales/gitlabhq,OtkurBiz/gitlabhq,ferdinandrosario/gitlabhq,wangcan2014/gitlabhq,OlegGirko/gitlab-ce,ZeoAlliance/gitlabhq,yama07/gitlabhq,allistera/gitlabhq,liyakun/gitlabhq,Burick/gitlabhq,Telekom-PD/gitlabhq,dwrensha/gitlabhq,tk23/gitlabhq,jirutka/gitlabhq,screenpages/gitlabhq,martinma4/gitlabhq,iiet/iiet-git,t-zuehlsdorff/gitlabhq,michaKFromParis/gitlabhq,stoplightio/gitlabhq,aaronsnyder/gitlabhq,NuLL3rr0r/gitlabhq,tempbottle/gitlabhq,dreampet/gitlab,LUMC/gitlabhq,Tyrael/gitlabhq,Tyrael/gitlabhq,ferdinandrosario/gitlabhq,johnmyqin/gitlabhq,nmav/gitlabhq,openwide-java/gitlabhq,jirutka/gitlabhq,nguyen-tien-mulodo/gitlabhq,darkrasid/gitlabhq,stellamiranda/mobbr-gitlabhq,kemenaran/gitlabhq,szechyjs/gitlabhq,yfaizal/gitlabhq,jrjang/gitlabhq,OtkurBiz/gitlabhq,Exeia/gitlabhq,revaret/gitlabhq,aaronsnyder/gitlabhq,tim-hoff/gitlabhq,windymid/test2,martijnvermaat/gitlabhq,LytayTOUCH/gitlabhq,dreampet/gitlab,theonlydoo/gitlabhq,chenrui2014/gitlabhq,sideci-sample/sideci-sample-gitlabhq,NARKOZ/gitlabhq,jaepyoung/gitlabhq,mmkassem/gitlabhq,mrb/gitlabhq,htve/GitlabForChinese,yulchitaj/TEST3,NKMR6194/gitlabhq,fscherwi/gitlabhq,fendoudeqingchunhh/gitlabhq,gopeter/gitlabhq,bigsurge/gitlabhq,rumpelsepp/gitlabhq,aaronsnyder/gitlabhq,youprofit/gitlabhq,bbodenmiller/gitlabhq,larryli/gitlabhq,jvanbaarsen/gitlabhq,rebecamendez/gitlabhq,daiyu/gitlab-zh,fgbreel/gitlabhq,theodi/gitlabhq,axilleas/gitlabhq,copystudy/gitlabhq,Datacom/gitlabhq,fgbreel/gitlabhq,koreamic/gitlabhq,fearenales/gitlabhq,Telekom-PD/gitlabhq,darkrasid/gitlabhq,dvrylc/gitlabhq,martijnvermaat/gitlabhq,LUMC/gitlabhq,ikappas/gitlabhq,lvfeng1130/gitlabhq,williamherry/gitlabhq,ttasanen/gitlabhq,initiummedia/gitlabhq,sekcheong/gitlabhq,shinexiao/gitlabhq,axilleas/gitlabhq,mathstuf/gitlabhq,LytayTOUCH/gitlabhq,hacsoc/gitlabhq,jaepyoung/gitlabhq,vjustov/gitlabhq,NARKOZ/gitlabhq,chenrui2014/gitlabhq,youprofit/gitlabhq,tim-hoff/gitlabhq,louahola/gitlabhq,cinderblock/gitlabhq,cinderblock/gitlabhq,windymid/test2,ngpestelos/gitlabhq,NuLL3rr0r/gitlabhq,sekcheong/gitlabhq,martinma4/gitlabhq,theodi/gitlabhq,dukex/gitlabhq,per-garden/gitlabhq,mente/gitlabhq,xuvw/gitlabhq,jvanbaarsen/gitlabhq,mavimo/gitlabhq,childbamboo/gitlabhq