cli: exit and kill Chrome on unhandledRejection (#6394)
cli: exit and kill Chrome on unhandledRejection (#6394)



GoogleChrome/lighthouse,wardpeet/lighthouse,umaar/lighthouse,deepanjanroy/lighthouse,ev1stensberg/lighthouse,ev1stensberg/lighthouse,umaar/lighthouse,wardpeet/lighthouse,ev1stensberg/lighthouse,wardpeet/lighthouse,deepanjanroy/lighthouse,GoogleChrome/lighthouse,deepanjanroy/lighthouse,umaar/lighthouse,deepanjanroy/lighthouse,ev1stensberg/lighthouse,umaar/lighthouse,GoogleChrome/lighthouse,GoogleChrome/lighthouse,wardpeet/lighthouse,deepanjanroy/lighthouse,wardpeet/lighthouse,GoogleChrome/lighthouse