This call
curl -s -H "X-Auth-Token:${token}" http://hostname:8774/
Against this version of nova-api: Version: 1:2015.1.1+a40~g2864505+trusty-1
returns only a version with id of v2.0,
Making that call against devstack returns versions with ids v2.0 and v2.1.
Is there anything you need to do on kilo to make id v2.1 available?