kraken: Do not init peer context if torrent is not enabled
kraken: Do not init peer context if torrent is not enabled

Reviewers: #kraken, igor

Reviewed By: #kraken, igor

Subscribers: jenkins

Differential Revision: https://code.uberinternal.com/D1341329

uber/kraken,uber/kraken,uber/kraken,uber/kraken,uber/kraken