test-bot: better fold id for travis
test-bot: better fold id for travis

* Only use first two word in command to keep id short
* Append unique number in the id.

Closes Homebrew/homebrew#44104.

Signed-off-by: Xu Cheng <9a05244150b861e40c78843b801eed71bca54eac@me.com>

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