Improve regexp to prevent false positives
Improve regexp to prevent false positives

If a filename happened to contain "db" and enough "rwx" characters before, then
this test would previously fail. For example:

```
drwxr-xr-x gitlab-runner/gitlab-runner      0 2015-04-02 07:46 uploads/tmp/cassidy.stokes8477/gitlabhq/36d972fa55d6b44810fc6fd843473adb/
```

Adding a space before the "db" match string tightens up the regexp and reduces the
chance of unintended match.

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