Use TCPKA for Rabbit cluster

See https://bugs.launchpad.net/oslo.messaging/+bug/856764/comments/19
poke ci

Related-Bug: 1289200
Change-Id: I39684e0a57d05451ecb4786250529518fe142b1d
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>