Update tags_controller.rb to use CreateTagService.
Update tags_controller.rb to use CreateTagService.

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