audit --online: check homepage reachability
audit --online: check homepage reachability

Closes Homebrew/homebrew#41607.

Signed-off-by: Baptiste Fontaine <bfee279af59f3e3f71f7ce1fa037ea7b90f93cbf@yahoo.fr>

aw1621107/brew,reelsense/brew,toonetown/homebrew,claui/brew,amar-laksh/brew_sudo,reitermarkus/brew,mgrimes/brew,rwhogg/brew,DomT4/brew,tonyg/homebrew,JCount/brew,reelsense/brew,JCount/brew,zmwangx/brew,rwhogg/brew,gregory-nisbet/brew,toonetown/homebrew,AnastasiaSulyagina/brew,hanxue/linuxbrew,muellermartin/dist,pseudocody/brew,sjackman/homebrew,AnastasiaSulyagina/brew,Homebrew/brew,zmwangx/brew,mahori/brew,rwhogg/brew,bfontaine/brew,EricFromCanada/brew,reitermarkus/brew,sjackman/homebrew,muellermartin/dist,JCount/brew,sjackman/homebrew,pseudocody/brew,AnastasiaSulyagina/brew,tonyg/homebrew,jmsundar/brew,reelsense/brew,gordonmcshane/homebrew,gregory-nisbet/brew,maxim-belkin/brew,gordonmcshane/homebrew,vitorgalvao/brew,claui/brew,Homebrew/brew,hanxue/linuxbrew,mistydemeo/homebrew,konqui/brew,pseudocody/brew,palxex/brew,jmsundar/brew,MikeMcQuaid/brew,konqui/brew,mgrimes/brew,toonetown/homebrew,DomT4/brew,MikeMcQuaid/brew,reitermarkus/brew,Linuxbrew/brew,palxex/brew,Linuxbrew/brew,amar-laksh/brew_sudo,reitermarkus/brew,konqui/brew,claui/brew,claui/brew,nandub/brew,aw1621107/brew,hanxue/linuxbrew,nandub/brew,mahori/brew,EricFromCanada/brew,MikeMcQuaid/brew,Homebrew/brew,palxex/brew,JCount/brew,sjackman/homebrew,ilovezfs/brew,MikeMcQuaid/brew,nandub/brew,DomT4/brew,maxim-belkin/brew,mahori/brew,gordonmcshane/homebrew,vitorgalvao/brew,aw1621107/brew,alyssais/brew,konqui/brew,ilovezfs/brew,mgrimes/brew,mistydemeo/homebrew,EricFromCanada/brew,staticfloat/brew,ilovezfs/brew,gregory-nisbet/brew,tonyg/homebrew,staticfloat/brew,vitorgalvao/brew,staticfloat/brew,vitorgalvao/brew,amar-laksh/brew_sudo,Linuxbrew/brew,alyssais/brew,Homebrew/brew,mahori/brew,zmwangx/brew,DomT4/brew,maxim-belkin/brew,nandub/brew,jmsundar/brew,mistydemeo/homebrew,bfontaine/brew,EricFromCanada/brew,Linuxbrew/brew,alyssais/brew,bfontaine/brew,muellermartin/dist