Update Installation doc for 8-1-stable
Update Installation doc for 8-1-stable

yatish27/gitlabhq,openwide-java/gitlabhq,yatish27/gitlabhq,screenpages/gitlabhq,martijnvermaat/gitlabhq,szechyjs/gitlabhq,jrjang/gitlabhq,stoplightio/gitlabhq,koreamic/gitlabhq,cui-liqiang/gitlab-ce,Telekom-PD/gitlabhq,ksoichiro/gitlabhq,mr-dxdy/gitlabhq,Datacom/gitlabhq,screenpages/gitlabhq,jrjang/gitlabhq,szechyjs/gitlabhq,koreamic/gitlabhq,shinexiao/gitlabhq,szechyjs/gitlabhq,yatish27/gitlabhq,SVArago/gitlabhq,ikappas/gitlabhq,jirutka/gitlabhq,jrjang/gitlab-ce,fpgentil/gitlabhq,larryli/gitlabhq,darkrasid/gitlabhq,htve/GitlabForChinese,mmkassem/gitlabhq,dplarson/gitlabhq,iiet/iiet-git,louahola/gitlabhq,axilleas/gitlabhq,LUMC/gitlabhq,sonalkr132/gitlabhq,ksoichiro/gitlabhq,darkrasid/gitlabhq,openwide-java/gitlabhq,htve/GitlabForChinese,ttasanen/gitlabhq,jrjang/gitlab-ce,jrjang/gitlab-ce,t-zuehlsdorff/gitlabhq,cui-liqiang/gitlab-ce,yatish27/gitlabhq,ferdinandrosario/gitlabhq,axilleas/gitlabhq,larryli/gitlabhq,louahola/gitlabhq,MauriceMohlek/gitlabhq,MauriceMohlek/gitlabhq,martijnvermaat/gitlabhq,icedwater/gitlabhq,dwrensha/gitlabhq,martijnvermaat/gitlabhq,duduribeiro/gitlabhq,fpgentil/gitlabhq,dplarson/gitlabhq,darkrasid/gitlabhq,mr-dxdy/gitlabhq,larryli/gitlabhq,SVArago/gitlabhq,stoplightio/gitlabhq,LUMC/gitlabhq,ikappas/gitlabhq,dreampet/gitlab,Soullivaneuh/gitlabhq,shinexiao/gitlabhq,Datacom/gitlabhq,stoplightio/gitlabhq,icedwater/gitlabhq,Telekom-PD/gitlabhq,axilleas/gitlabhq,larryli/gitlabhq,ttasanen/gitlabhq,ikappas/gitlabhq,ferdinandrosario/gitlabhq,mrb/gitlabhq,jirutka/gitlabhq,ttasanen/gitlabhq,jirutka/gitlabhq,dwrensha/gitlabhq,SVArago/gitlabhq,dreampet/gitlab,duduribeiro/gitlabhq,icedwater/gitlabhq,allysonbarros/gitlabhq,mrb/gitlabhq,t-zuehlsdorff/gitlabhq,dwrensha/gitlabhq,koreamic/gitlabhq,ttasanen/gitlabhq,mmkassem/gitlabhq,LUMC/gitlabhq,shinexiao/gitlabhq,LUMC/gitlabhq,fpgentil/gitlabhq,cui-liqiang/gitlab-ce,Telekom-PD/gitlabhq,mrb/gitlabhq,MauriceMohlek/gitlabhq,fpgentil/gitlabhq,jrjang/gitlabhq,dwrensha/gitlabhq,openwide-java/gitlabhq,jrjang/gitlabhq,ferdinandrosario/gitlabhq,SVArago/gitlabhq,Soullivaneuh/gitlabhq,iiet/iiet-git,dreampet/gitlab,ksoichiro/gitlabhq,dplarson/gitlabhq,axilleas/gitlabhq,duduribeiro/gitlabhq,mrb/gitlabhq,icedwater/gitlabhq,htve/GitlabForChinese,Datacom/gitlabhq,Soullivaneuh/gitlabhq,t-zuehlsdorff/gitlabhq,daiyu/gitlab-zh,t-zuehlsdorff/gitlabhq,openwide-java/gitlabhq,sonalkr132/gitlabhq,sonalkr132/gitlabhq,screenpages/gitlabhq,iiet/iiet-git,allysonbarros/gitlabhq,duduribeiro/gitlabhq,htve/GitlabForChinese,ksoichiro/gitlabhq,dplarson/gitlabhq,koreamic/gitlabhq,darkrasid/gitlabhq,allysonbarros/gitlabhq,daiyu/gitlab-zh,szechyjs/gitlabhq,Datacom/gitlabhq,cui-liqiang/gitlab-ce,screenpages/gitlabhq,shinexiao/gitlabhq,sonalkr132/gitlabhq,mr-dxdy/gitlabhq,martijnvermaat/gitlabhq,jirutka/gitlabhq,Soullivaneuh/gitlabhq,jrjang/gitlab-ce,louahola/gitlabhq,daiyu/gitlab-zh,allysonbarros/gitlabhq,mmkassem/gitlabhq,louahola/gitlabhq,daiyu/gitlab-zh,mr-dxdy/gitlabhq,iiet/iiet-git,MauriceMohlek/gitlabhq,dreampet/gitlab,Telekom-PD/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,ikappas/gitlabhq,ferdinandrosario/gitlabhq