Add smtp settings override in smtp_settings sample file.
Add smtp settings override in smtp_settings sample file.

fantasywind/gitlabhq,bozaro/gitlabhq,DanielZhangQingLong/gitlabhq,Telekom-PD/gitlabhq,TheWatcher/gitlabhq,fendoudeqingchunhh/gitlabhq,darkrasid/gitlabhq,cui-liqiang/gitlab-ce,mente/gitlabhq,fscherwi/gitlabhq,zrbsprite/gitlabhq,Kambda/Mobbr,t-zuehlsdorff/gitlabhq,screenpages/gitlabhq,k4zzk/gitlabhq,ngpestelos/gitlabhq,copystudy/gitlabhq,whluwit/gitlabhq,yfaizal/gitlabhq,dplarson/gitlabhq,ordiychen/gitlabhq,sue445/gitlabhq,chenrui2014/gitlabhq,vjustov/gitlabhq,stoplightio/gitlabhq,zrbsprite/gitlabhq,fgbreel/gitlabhq,yatish27/gitlabhq,youprofit/gitlabhq,joalmeid/gitlabhq,LytayTOUCH/gitlabhq,koreamic/gitlabhq,mavimo/gitlabhq,pulkit21/gitlabhq,allysonbarros/gitlabhq,nmav/gitlabhq,since2014/gitlabhq,rebecamendez/gitlabhq,windymid/test2,phinfonet/mobbr-gitlabhq,mmkassem/gitlabhq,jirutka/gitlabhq,ferdinandrosario/gitlabhq,manfer/gitlabhq,michaKFromParis/gitlabhq,yuyue2013/ss,rumpelsepp/gitlabhq,screenpages/gitlabhq,hzy001/gitlabhq,icedwater/gitlabhq,mr-dxdy/gitlabhq,ayufan/gitlabhq,whluwit/gitlabhq,delkyd/gitlabhq,jirutka/gitlabhq,chenrui2014/gitlabhq,nmav/gitlabhq,theonlydoo/gitlabhq,mathstuf/gitlabhq,since2014/gitlabhq,sonalkr132/gitlabhq,martinma4/gitlabhq,it33/gitlabhq,tk23/gitlabhq,dvrylc/gitlabhq,fgbreel/gitlabhq,8thcolor/rubyconfau2015-sadr,dukex/gitlabhq,per-garden/gitlabhq,rhels/gitlabhq,darkrasid/gitlabhq,eliasp/gitlabhq,flashbuckets/gitlabhq,kotaro-dev/gitlab-6-9,Burick/gitlabhq,nguyen-tien-mulodo/gitlabhq,childbamboo/gitlabhq,darkrasid/gitlabhq,axilleas/gitlabhq,stoplightio/gitlabhq,julianengel/gitlabhq,copystudy/gitlabhq,fearenales/gitlabhq,8thcolor/testing-public-gitlabhq,adaiguoguo/gitlab_globalserarch,tk23/gitlabhq,pkgr/gitlabhq,cui-liqiang/gitlab-ce,pupaxxo/gitlabhq,martijnvermaat/gitlabhq,theonlydoo/gitlabhq,sideci-sample/sideci-sample-gitlabhq,pupaxxo/gitlabhq,cncodog/gitlab,tim-hoff/gitlabhq,pjknkda/gitlabhq,martijnvermaat/gitlabhq,Soullivaneuh/gitlabhq,mavimo/gitlabhq,louahola/gitlabhq,Datacom/gitlabhq,k4zzk/gitlabhq,theodi/gitlabhq,ikappas/gitlabhq,jairzh/gitlabhq-sfdc,NARKOZ/gitlabhq,jrjang/gitlab-ce,tim-hoff/gitlabhq,NKMR6194/gitlabhq,jairzh/gitlabhq-sfdc,akumetsuv/gitlab,fgbreel/gitlabhq,folpindo/gitlabhq,salipro4ever/gitlabhq,johnmyqin/gitlabhq,whluwit/gitlabhq,hq804116393/gitlabhq,MauriceMohlek/gitlabhq,larryli/gitlabhq,lvfeng1130/gitlabhq,martinma4/gitlabhq,yama07/gitlabhq,martijnvermaat/gitlabhq,bozaro/gitlabhq,bozaro/gitlabhq,michaKFromParis/gitlabhq,julianengel/gitlabhq,ttasanen/gitlabhq,SkyWei/gitlabhq,michaKFromParis/gitlabhq,initiummedia/gitlabhq,OlegGirko/gitlab-ce,revaret/gitlabhq,allistera/gitlabhq,larryli/gitlabhq,sue445/gitlabhq,rumpelsepp/gitlabhq,dukex/gitlabhq,zBMNForks/gitlabhq,stellamiranda/mobbr-gitlabhq,Razer6/gitlabhq,jrjang/gitlabhq,rfeese/gitlab-ce,Soullivaneuh/gitlabhq,chadyred/gitlabhq,sakishum/gitlabhq,zrbsprite/gitlabhq,pkallberg/tjenare,phinfonet/mobbr-gitlabhq,cncodog/gitlab,jaepyoung/gitlabhq,LytayTOUCH/gitlabhq,H3Chief/gitlabhq,OlegGirko/gitlab-ce,SVArago/gitlabhq,childbamboo/gitlabhq,123Haynes/gitlabhq,salipro4ever/gitlabhq,mrb/gitlabhq,screenpages/gitlabhq,vjustov/gitlabhq,gorgee/gitlabhq,gopeter/gitlabhq,ngpestelos/gitlabhq,yatish27/gitlabhq,openwide-java/gitlabhq,initiummedia/gitlabhq,yonglehou/gitlabhq,dwrensha/gitlabhq,Tyrael/gitlabhq,yama07/gitlabhq,sonalkr132/gitlabhq,123Haynes/gitlabhq,phinfonet/mobbr-gitlabhq,yulchitaj/TEST3,aaronsnyder/gitlabhq,NARKOZ/gitlabhq,screenpages/gitlabhq,kotaro-dev/gitlab-6-9,Keystion/gitlabhq,k4zzk/gitlabhq,manfer/gitlabhq,fendoudeqingchunhh/gitlabhq,dreampet/gitlab,icedwater/gitlabhq,nmav/gitlabhq,NuLL3rr0r/gitlabhq,duduribeiro/gitlabhq,iiet/iiet-git,kemenaran/gitlabhq,luzhongyang/gitlabhq,OtkurBiz/gitlabhq,htve/GitlabForChinese,martinma4/gitlabhq,bbodenmiller/gitlabhq,mmkassem/gitlabhq,gopeter/gitlabhq,gorgee/gitlabhq,shinexiao/gitlabhq,chadyred/gitlabhq,ksoichiro/gitlabhq,sideci-sample/sideci-sample-gitlabhq,ttasanen/gitlabhq,fantasywind/gitlabhq,cncodog/gitlab,NuLL3rr0r/gitlabhq,yulchitaj/TEST3,fearenales/gitlabhq,Soullivaneuh/gitlabhq,sakishum/gitlabhq,nmav/gitlabhq,ferdinandrosario/gitlabhq,joalmeid/gitlabhq,stanhu/gitlabhq,michaKFromParis/sparkslab,ZeoAlliance/gitlabhq,larryli/gitlabhq,pulkit21/gitlabhq,mente/gitlabhq,pjknkda/gitlabhq,pulkit21/gitlabhq,t-zuehlsdorff/gitlabhq,Soullivaneuh/gitlabhq,H3Chief/gitlabhq,openwide-java/gitlabhq,revaret/gitlabhq,pulkit21/gitlabhq,revaret/gitlabhq,bigsurge/gitlabhq,joalmeid/gitlabhq,icedwater/gitlabhq,pkallberg/tjenare,ibiart/gitlabhq,koreamic/gitlabhq,ksoichiro/gitlabhq,Datacom/gitlabhq,sekcheong/gitlabhq,bigsurge/gitlabhq,jrjang/gitlab-ce,LUMC/gitlabhq,initiummedia/gitlabhq,OlegGirko/gitlab-ce,tim-hoff/gitlabhq,akumetsuv/gitlab,whluwit/gitlabhq,louahola/gitlabhq,rfeese/gitlab-ce,k4zzk/gitlabhq,Datacom/gitlabhq,initiummedia/gitlabhq,dplarson/gitlabhq,atomaka/gitlabhq,8thcolor/rubyconfau2015-sadr,shinexiao/gitlabhq,michaKFromParis/sparkslab,WSDC-NITWarangal/gitlabhq,htve/GitlabForChinese,vjustov/gitlabhq,axilleas/gitlabhq,michaKFromParis/gitlabhqold,sakishum/gitlabhq,fendoud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/ss,H3Chief/gitlabhq,wangcan2014/gitlabhq,johnmyqin/gitlabhq,tempbottle/gitlabhq,gorgee/gitlabhq,ikappas/gitlabhq,Razer6/gitlabhq,jaepyoung/gitlabhq,flashbuckets/gitlabhq,ordiychen/gitlabhq,jirutka/gitlabhq,rebecamendez/gitlabhq,rumpelsepp/gitlabhq,duduribeiro/gitlabhq,akumetsuv/gitlab,SVArago/gitlabhq,bladealslayer/gitlabhq,8thcolor/testing-public-gitlabhq,NARKOZ/gitlabhq,kitech/gitlabhq,sideci-sample/sideci-sample-gitlabhq,fgbreel/gitlabhq,stanhu/gitlabhq,folpindo/gitlabhq,childbamboo/gitlabhq,dreampet/gitlab,fantasywind/gitlabhq,kemenaran/gitlabhq,SkyWei/gitlabhq,chadyred/gitlabhq,adaiguoguo/gitlab_globalserarch,pjknkda/gitlabhq,dwrensha/gitlabhq,axilleas/gitlabhq,zBMNForks/gitlabhq,rhels/gitlabhq,NKMR6194/gitlabhq,WSDC-NITWarangal/gitlabhq,sonalkr132/gitlabhq,adaiguoguo/gitlab_globalserarch,daiyu/gitlab-zh,8thcolor/testing-public-gitlabhq,sonalkr132/gitlabhq,darkrasid/gitlabhq,wangcan2014/gitlabhq,koreamic/gitlabhq,bozaro/gitlabhq,ttasanen/gitlabhq,Kambda/mobbr-gitlabhq,ibiart/gitlabhq,Kambda/Mobbr,michaKFromParis/gitlabhqold,duduribeiro/gitlabhq,mrb/gitlabhq,sekcheong/gitlabhq,dreampet/gitlab,chenrui2014/gitlabhq,SkyWei/gitlabhq,Tyrael/gitlabhq,salipro4ever/gitlabhq,ibiart/gitlabhq,ZeoAlliance/gitlabhq,SVArago/gitlabhq,michaKFromParis/sparkslab,it33/gitlabhq,Keystion/gitlabhq,stanhu/gitlabhq,bigsurge/gitlabhq,eliasp/gitlabhq,yonglehou/gitlabhq,tk23/gitlabhq,dplarson/gitlabhq,hq804116393/gitlabhq,Kambda/mobbr-gitlabhq,dwrensha/gitlabhq,LUMC/gitlabhq,OtkurBiz/gitlabhq,martijnvermaat/gitlabhq,pkgr/gitlabhq,jaepyoung/gitlabhq,jvanbaarsen/gitlabhq,delkyd/gitlabhq,nguyen-tien-mulodo/gitlabhq,wangcan2014/gitlabhq,yulchitaj/TEST3,htve/GitlabForChinese,sue445/gitlabhq,TheWatcher/gitlabhq,ikappas/gitlabhq,manfer/gitlabhq,jvanbaarsen/gitlabhq,rfeese/gitlab-ce,kotaro-dev/gitlab-6-9,fearenales/gitlabhq,zBMNForks/gitlabhq,OtkurBiz/gitlabhq,allistera/gitlabhq,jrjang/gitlab-ce,allysonbarros/gitlabhq,ksoichiro/gitlabhq,stellamiranda/mobbr-gitlabhq,eliasp/gitlabhq,allistera/gitlabhq,since2014/gitlabhq,delkyd/gitlabhq,htve/GitlabForChinese,childbamboo/gitlabhq,xuvw/gitlabhq,cinderblock/gitlabhq