added env_vars so apt task can go through proxy
added env_vars so apt task can go through proxy

blueboxgroup/ursula,blueboxgroup/ursula,fancyhe/ursula,fancyhe/ursula,pgraziano/ursula,fancyhe/ursula,blueboxgroup/ursula,pgraziano/ursula,pgraziano/ursula,pgraziano/ursula,blueboxgroup/ursula,fancyhe/ursula