BUG-1997: moving barrier after message

- before <message>.isBarrier rendered into barrier exchange before message
  now barrier exchange occurs after message

Change-Id: I1e4c4738eedef50b737a2d395123873156740df6
Signed-off-by: Michal Rehak <mirehak@cisco.com>
Merge "BUG-1997: moving barrier after message"