Fix localhost server to properly shutdown.
Fix localhost server to properly shutdown.

The INT signal handler in rack 1.1 has moved to the rack binary, so we need to add it ourselves now.
mcfiredrill/vcr,nishanbose/vcr,myronmarston/vcr,ZmagoD/vcr,mcfiredrill/vcr,davidbebb/vcr,cemo/vcr,allyapp/vcr,cemo/vcr,irfanah/vcr,myronmarston/vcr,asymmetric/vcr,intfrr/vcr,ZmagoD/vcr,nishanbose/vcr,ihassin/vcr,chriswoodrich/vcr,Shopify/vcr,ihassin/vcr,allyapp/vcr,Shopify/vcr,intfrr/vcr,asymmetric/vcr,davidbebb/vcr,irfanah/vcr,chriswoodrich/vcr